I.C. System, Inc. Debt Collection Complaint

I.C. System, Inc. Debt collection department,

Medical Cont'd attempts collect debt not owed Debt was paid Maryland

I went to - - ( aka - - ) in -/-/-/ - -. First I went for - & then I went for doctor 's visit/ -. I paid for both visits in -/-/-. I have receipts for the visit - printed & credit card tape. In - - I started receiving calls from a collection agency. I provided copies of the receipts from the payment as well as a copy of my bank statement with the money coming out of my account. The collection agency said they could not stop calling me until the office told them to stop calling me. I sent the receipts and a letter of complaint to the doctors office and I fired my - that I had been going to for approximately - years because I had recurring billing problems with them in -/-/-, -/-/- & -/-/-. They did not acknowledge the letter or the receipts. They did not call off the collection agency. However, I know that they did receive the letter and receipts because when I went to my new - this year, instead of sending my medical records that I requested and paid $ -- $25.00 for them to send,


I do not recall the specifics of the issue with the -/-/- bill. I have been remiss about checking my credit. I think they charged an old insurance instead of a current one. However, I thought it was resolved long before my appointment in -/-/-. Additionally it did not show up as a previous balance on my invoice for -/-/-. How do I get them to resolve this? Note : I do not have the copies of the invoice & receipt with me. I would like to opportunity to upload them later even though they already have them. I did upload my bank statement that shows the money coming out of my account.