This scam campaign involves a coordinated network of three toll-free phone numbers operating under the guise of a "tax relief and mediation agency." The primary number, 877-437-3891, has generated 4 FTC complaints categorized as "Calls pretending to be government, businesses, or family and friends." This number is connected to two additional numbers, 866-921-2310 and 877-723-0437, through reported_together relationships with 0.35 confidence scores, indicating these numbers are being used in conj...
877-437-3891
Last reported Apr 9, 2026
- 4 FTC complaints filed against this number
- 7 community reports from users
- Most reports: Calls pretending to be government, businesses, or family and friends
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Hi it's Olivia Markham. I'm calling on Tuesday, December 16th from the client resolution department of a tax relief and mediation agency, 877-437-3891. I'm closing out open files and your record still shows unresolved flagged concerns that could result in penalties or additional action if not reviewed. The extension period is still active, but relief availability is limited. Many individuals are qualifying for adjusted balances or full resolution after a quick review. With 2025 relief expiring at month end, now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance, press 2 when calling back. [BBB Scam Type: Phishing] [Business: Unknown] [Location: TN, USA - 38002]
Voicemail left: "Hi, it's Olivia Markham calling on Tuesday, December 16th from the client resolution Department of a tax relief and mediation agency 877-437-3891. I'm closing out open files, and your record still shows unresolved flagged concerns that could result in penalties or additional action. If not reviewed. The extension period is still active, but relief availability is limited many individuals are qualifying for adjusted balances or full resolution after a quick review was 2025 relief expiring at month end now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance, press 2 when calling back." [BBB Scam Type: Tax Collection] [Business: Non] [Location: IL, USA - 60417]
Person called and left a voicemail saying: “ Hi it's Olivia Markham. calling on Tuesday, December 16th from the client resolution department of a tax relief and mediation agency, 877-437-3891. I'm closing out open files and your record still shows unresolved flagged concerns that could result in penalties or additional action if not reviewed. The extension period is still active, but relief availability is limited. Many individuals are qualifying for adjusted balances or full resolution after a quick review. With 2025 relief expiring at month end, now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance. Press 2 when calling back.” [BBB Scam Type: Tax Collection] [Business: Tax Relief] [Location: NM, USA - 87106]
Voicemail from 877-723-0437 Hi it's Olivia Markham. I'm calling on Tuesday, December 16th from the client resolution department of a tax relief and mediation agency, 877-437-3891. I'm closing out open files and your record still shows unresolved flagged concerns that could result in penalties or additional action if not reviewed. The extension period is still active, but relief availability is limited. Many individuals are qualifying for adjusted balances or full resolution after a quick review. With 2025 relief expiring at month end, now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance, press 2 when calling back. [BBB Scam Type: Tax Collection] [Business: Tax relief and mediation agency Date] [Location: TN, USA - 37129]
Left a VM- Hi it's Olivia Markham. calling on Tuesday, December 16th from the client resolution department of the tax relief and mediation agency, 877-437-3891. I'm closing out open files and your record still shows unresolved flagged concerns that could result in penalties or additional action if not reviewed. The extension period is still active, but relief availability is limited. Many individuals are qualifying for adjusted balances or full resolution after a quick review. With 2025 relief expiring at month end, now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance. Press 2 when calling back. [BBB Scam Type: Phishing] [Business: client resolution department of the tax relief and mediation agency] [Location: IN, USA - 46962]
Got a voicemail from someone claiming to be Olivia Markum from the Client Resolution Department at the Tax Relief and Remediation Agency. They said they were closing out open files and that there were unresolved flagged concerns with my tax files. They then encouraged me to call them at (877)437-3891 which is different from the spoofed number they called from. (877)437-3891 as of 12/18/2025 appears to be a locally ported or locally formatted Telnyx LLC VOIP number UID: 446fd526fec3bef1db0e9d7a695fbec5 and is NOT a valid tax agency number. [BBB Scam Type: Tax Collection] [Business: Tax Relief Remediation Agency Date] [Location: WI, USA - 53085]
Hi, it's Olivia Markham. Calling on Tuesday, December 16th from the client resolution department of the tax relief and mediation agency, 877-437-3891. I'm closing out open files and your record bill shows unresolved flagged concerns that could result in penalties or additional action if not reviewed. The extension period is still active, but relief availability is limited. Many individuals are qualifying for adjusted balances or full resolution after a quick review. With 2025 relief expiring at month end, now is the right time to act. Please call me back today at 877-437-3891. Again, 877-437-3891. If you no longer need assistance, press 2 when calling back. [BBB Scam Type: Phishing] [Business: Client Resolution Department of the Tax Relieve and Mediation Agency] [Location: CA, USA - 92688]
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