Product: Debt collection

" Debt '' {$2400.00} - was paid twice - first payment on XXXX/XXXX/XXXX over the phone ( due to XXXX system upgrade, we found out our payment was cancelled ) and second payment was made on XXXX/XXXX/XXXX ( same credit card ). In between the time - we did NOT receive any notice that this was being escalated to collections. Please see below for full history explanation XXXX XXXX unjust consumer treatment in this matter. 

Background : Our medical provider submitted a prescription through our XXXX ( the mail-in pharmacy identified on our health insurance on XXXX/XXXX/XXXX. Before we could redirect the prescription to our local pharmacy ( who offered a better price ) - XXXX XXXX shipped the prescription to us without our consent. We contacted them on XXXX, XXXX, and XXXX to attempt to return the order and/or get credited for something we did not authorize. They would not concede. We received the first bill for the unauthorized shipment on XXXX/XXXX/XXXX ( Bill # XXXX ) - the bill contain no itemized list of what we were being charged for ( just a payment due ) - so we contacted XXXX on XXXX/XXXX/XXXX to request an itemized bill be sent. The women ( XXXX ) on the phone was not able to even tell us verbally over the phone what the bill was for. So she said she had to submit a request to another dept to have a paper copy of the itemized bill to our house which she claimed would arrive in 7-10 business days. We 'd already accepted we were paying for duplicate medications due to physician error - but we were not paying blindly for something XXXX could not even tell us what the bill was for. We waited until XXXX/XXXX/XXXX to contact XXXX again/follow-up on the status of the itemized bill. Once again the representative ( I did n't take their name ) told us that they could not see what the bill was for and would need to submit a request to have an itemized bill sent to our house via snail mail. We received Bill # 2 from XXXX on XXXX/XXXX/XXXX - again, with No itemization. We still had not received the itemized list promised to us on XXXX/XXXX/XXXX and again on XXXX/XXXX/XXXX. No one could tell us what the bill was for. So we called AGAIN on XXXX/XXXX/XXXX - and asked for a supervisor. We received the same message - we ca n't tell you what the bill is for - need to submit to other dept to mail you copy. We FINALLY received a copy of the itemized bill ( telling us what we were actually paying for ) on XXXX/XXXX/XXXX. We needed to clarify a few of the prescriptions listed on the itemized bill with my dr ( as XXXX was a prescription I was XXXX/would never have been prescribed ). And we called XXXX ( yes, 7 calls later ) on XXXX/XXXX/XXXX to clarify the prescription they sent was different then listed on the itemized bill and to PAY the bill. We provided a credit card number - they said they would process it and we thought everything was done. Between XXXX/XXXX/XXXX ( non-itemized Bill # 2 ) and XXXX/XXXX/XXXX we did NOT receive any additional bills NOR did we receive any notice that this was being escalated to collections. The first indication we received that this was sitting with collections firm " transworld systems '' was when I received a call ( without providing my name or the name of the company they were calling on behalf of ) this week on XXXX/XXXX/XXXX. In my gut I knew this was XXXX incompetence - so immediately contacted them to see what the issue was ( since we had paid them over the phone on XXXX/XXXX/XXXX ). The women we spoke with was very apologetic saying that they had just upgraded systems in XX/XX/XXXX - XX/XX/XXXX and were still having issues. It looked like the system canceled our payment. So we paid AGAIN on XX/XX/XXXX - this time checking our credit card to ensure. As of XXXX/XXXX/XXXX - I 'm still receiving harassing, nondescript, phone messages from TWS including a letter in the mail today - XXXX/XXXX/XXXX. I have always had extremely good credit and am concerned this awful experience will tarnish that credit. Please help