-On XX/XX/XXXX a bill was sent to me from XXXX in regards to a debt owed to XXXX in the amount of {$840.00} which should have included the amount owed for a phone and the last phone bill. 
-On XX/XX/XXXX a bill was sent to me from Receivables XXXX XXXX, XXXX XXXX regards to that same debt, but stating that I owed {$1600.00}. 
-On XX/XX/XXXX I sent a fax to the Escalations Dept. at XXXX XXXX XXXX, XXXX requesting validation and explanation of the increase from the original debt amount. I mentioned that I 'd spoken with a representative from XXXX who told me that additional charges were added to the account in XXXX and XX/XX/XXXX. At that time my account was closed and I had entered a contract with a new cellular phone carrier in XX/XX/XXXX. 
-On XX/XX/XXXX, Receivables XXXX XXXX, XXXX XXXX me a T-Mobile statement as validation of debt, but did not explain why the additional charges were added to an account that should have been closed in XXXX. 
-On XX/XX/XXXX, I sent a letter to Receivables XXXX XXXX, XXXX in response to the statement inquiring about the charges that were very confusing to me. 
-On XX/XX/XXXX I received a statement from Diversified Consultants, Inc. regarding the said amount due to XXXX. 
-On XX/XX/XXXX sent a letter to Diversified Consultants , Inc. inquiring about the explanation of the debt owed to XXXX. 
-On XX/XX/XXXX I drafted a subsequent letter to send Diversified Consultants , Inc. regarding their lack of response and explanation of the debt owed to XXXX. I am not comfortable paying for charges that I 'm not sure are accurate. 

Thanks so much for your time and attention to this matter.