I received a medical debt in the mail that was not mine. I wrote the collection agency Ernst , Artmann & XXXX, INC to inform them the debt was n't mine and I was a victim of identity theft. They responded by writing on top of my letter with " this is not a credit account ... '' and again I disputed the debt because it was n't mine and was a result of ID Theft. They again returned my letter I written with a handwritten response on my letter and failed to adhere to the fact the debt was n't mine and a result of ID Theft. This debt is fraudulent and has never been validated. It was been past the 30 days as law provides to validate this debt. 
I then check my credit and found the collection agency reported this fraudulent account on my credit file causing a major credit diminish to my exceptional. 
This collection agency never validated this debt within 30 days and then knowingly and purposely reported this fraudulent account that is not mine on my credit report. 
The is a defamation of my character, malicious intent and a violation of my FDCPA, CA XXXX XXXX and California Identity Theft Act