ATG Credit, LLC Debt Collection Complaint

ATG Credit, LLC Debt collection department,

I do not know Took or threatened to take negative or legal action Threatened or suggested your credit would be damaged Tennessee

I routinely check my credit report for updates and inaccuracies. I checked my report during the week of -/-/- after receiving an email alert from a credit reporting agency that my score had changed. I logged in and determined that both - and - had derogatory remarks on my account from a collections agency called ATG, which caused an almost 20 point drop in my credit score. I have never heard of ATG before seeing their name on my credit report nor have I ever received any correspondence or communication of any form from them. I had NO notice of any debt owed and I have no idea what this pertains to. I am unclear what the claimed amount owed is. Per the credit report it says balance $4200.00 and highest balance $2700.00, which makes no sense to me. It also says that it was opened in -/-/-. However, I usually check my credit at least once a month and receive regular email notifications of changes to my score and last week was the first time this appeared on my credit report. Again, between last - and now, I had no communications from ATG regarding a debt owed. Reporting the alleged debt to the credit reporting agencies and significantly damaging my credit was the first notification.