Regarding a letter dated XXXX XXXX, 2015 with the notation of C & W account # XXXX. Because I do not believe I owe what you say I owe I am requesting complete validation of this alleged debt as noted on the collection notice with account number XXXX. Furthermore, this is the first I have heard from you or anyone regarding this alleged matter. Therefore in accordance with the Fair Debt Collection Practices Act, I require all documentation regarding this alleged debt. Including all documents showing an agreement to pay, how interest was calculated, documents bearing my signature, an accounting of payments made, and proof that I have a obligation to pay XXXX XXXX XXXX. If this debt was purchased, I require full documentation of the purchase of this alleged debt.