Rash Curtis and Associates Debt Collection Complaint

Rash Curtis and Associates Debt collection department,

Medical Cont'd attempts collect debt not owed Debt is not mine California

I have sent - certified letters to Rash Curtis and Associates to have a fraudulent collection account removed from my credit and they continue to ignore but they are apparently responding to the credit bureaus advising them that the account belongs to me- it does n't!!! Originally they were reporting - unknown accounts then they were removed and all of a sudden a new account appears with a different account number # -