Product: Debt collection

This complained is about : Their information is : XXXX XXXX XXXX XXXX XXXX XXXX XXXX, CA XXXX XXXX XXXX XXXX ( XXXX ) XXXX And also involved : State Collection Services XXXX XXXX XXXX XXXX XXXX , WI XXXX The referenced XXXX account number is : XXXX This is the culmination of a two year battle with XXXX XXXX to get them to bill my health insurance for a XXXX  machine that my doctor ordered in XXXX. They consistently failed to submit bills for the machine to my wife 's insurance company and instead marked our account as self pay and tried to collect from us. I spent hours on the phone over the course of XXXX as did my doctor 's assistant who tried to work with their XXXX representative. 
During XXXX XXXX sent bills to us without details of what we were being billed for and also used my bank card we had on file with them to charge our account for several hundred dollars on two separate occasions. Our bank, XXXX XXXX XXXX XXXX, was able to reverse the unauthorized withdrawals and recover the money from XXXX. In early XXXX I decided I'd had enough of their incompetence and asked my doctor to order a XXXX machine from another provider and remove XXXX as our durable medical equipment supplier. I negotiated a payment with XXXX for on XX/XX/XXXX paid with my Mastercard for the amount of {$480.00}. I talked to their phone agent XXXX and asked specifically if this payment was all that I owed XXXX XXXX She verified that it was. I told her that I never wanted to hear from XXXX again. She said we wouldn't. This is the important part - I asked what to do with the XXXX machine that I'd gotten from XXXX. She said " It's yours. Do whatever you want with it. '' Fortunately I kept it and in XXXX of XXXX XXXX sent a threatening letter demanding that the machine be returned within 7 days of when their letter was mailed or we'd be charged {$400.00} for the machine. I returned it the day after I got the letter to their XXXX Colorado office and their representative gave me a receipt showing that I owned nothing further. I asked her specifically if I owed anything else and she said no. 
Last week I received a notification from XXXX that a debt collection company had opened a file on us. I immediately called the company and asked what was going on. 
The amount they gave me that XXXX was trying to collect was {$71.00}. I wrote up a format dispute and faxed it to them. A few days later I received a letter from them ( after I had asked them not to contact me again about this matter ). This time there were charges for the time between XXXX when I paid them off and when I turned the machine in totaling {$400.00}. XXXX had been charging me for rental on the machine after they were not longer our official provider and after they had told me I owned the machine and could do whatever I wanted with it. They lied to me and also have been charging me for supplies which I never received. I also did not receive any bills for the amounts shown on the State Collection Services statement. The first I heard of this whole debacle was from the Credit Bureau reports. 
I'm including all the documents I sent to XXXX XXXX and the collection agency 's letter. 
I notified State Collection Services and XXXX that I did not want to be contacted again about this and that I do not owe them anything. What they're doing is nothing less than fraud. I would request that XXXX drop this collection attempt and work to repair the damage they've done to our credit. 
I also filed a complaint with the XXXX ID number XXXX. 
From the documentation I provided it's clear that XXXX has lied, attempted to collect false rental and equipment charges and sent us to collections without ever sending us any kind of bills so that we could dispute them.