Product: Debt collection

I am a new XXXX who moved to XXXX on XXXX XXXX XXXX. On XX/XX/XXXX I had to visit XXXX XXXX XXXX for a XXXX XXXX XXXX caused due to XXXX I took for XXXX. 
I am on my spouses health insurance plan through her work. We were charged an amount of {$250.00} for our visit by XXXX paid by my wife on her credit card. 
I received a call from Renton Collection Agency ( hence forth abbreviated as RCA ) on XXXX XXXX XXXX around XXXX hrs from XXXX XXXX XXXX, regarding money I owe for the emergency visit, which was not paid and I should give them my credit card number if not they will put this as a bad debt on my credit history. I was shocked by the aggressive behavior of this person and told him We have already paid for our visit and gave him the details of the payment. He was not ready to listen to me and again threatened me reporting this to show on my credit history. I thought this is a Phishing call. I called up my wife at work and we made a conference call to XXXX XXXX billing and asked them if we owe them anything. They said we did not. We than called up RCA and found out the bill was raised by XXXX XXXX XXXX ( hence forth abbreviated as XXXX ) another entity working within XXXX XXXX XXXX XXXX. We called up XXXX billing office, spoke to XXXX, she said they sent us the bill to our address, which we never received. On further questioning we found that XXXX erroneously sent the bill to Apt XXXX instead of Apt XXXX. We updated them with our medical insurance information and the correct address and requested them to send us the bill for payment. We never received any bills. 
On XXXX XXXX XXXX we moved from XXXX XXXX XXXX, XXXX XXXX XXXX XXXX to XXXX XXXX XXXX XXXX XXXX XXXX XXXX. 
I received a call from XXXX XXXX of RCA at XXXX Hrs on XXXX XXXX XXXX. I again updated our new mailing address to him and asked him to send us the bill. 
The issue is the same, XXXX XXXX XXXX had sent a bill of $ XXXX for collection to them and if I pay it off on the phone now they will not spoil my credit record. 
we called up XXXX billing office once again today at XXXX hrs, spoke to XXXX ... ( last call made for the same purpose on XXXX XXXX XXXX at XXXX ). Updated my insurance details once again and our new address, and requested her to send us the bills and call off the collection agency. XXXX said she can not send us an email, however she will send a communication to Renton Collection Agency to stop harassing us. 
We tried making a conference call XXXX XXXX XXXX of Renton collection into a group call with XXXX, however XXXX XXXX did n't want to continue the conversation when he heard that XXXX XXXX XXXX are on the telephone line. 
In XXXX XXXX we received a letter from XXXX saying they have cleared an amount of {$260.00} on XXXX XXXX XXXX from a billed amount of {$380.00} billed by XXXX. We needed to pay {$46.00} as co-payee. 
I called up XXXX billing office Spoke to XXXX on XXXX XXXX XXXX at XXXX hrs and once again for the third time updated our address for them to send us the bill of {$46.00}. They say they still have no record of our address change and they have sent our bill for collection and they no longer can accept the money and I should talk to RCA. 
I called up RCA spoke to XXXX XXXX of RCA at XXXX Hrs on XXXX XXXX XXXX. Asked him why we were not raised a bill for the due amount of {$46.00} after they were paid {$260.00} by the XXXX insurance on XXXX XXXX XXXX, this is in spite of us giving RCA and XXXX our Billing address. XXXX XXXX informed me I should pay {$88.00} immediately by phone to him and he had already reported us as defaulter to credit reporting agency XXXX to be placed on our record. 
We have faced harassment, false statements, unfair action and threats from Renton Collection Agency without they even sending us one debt notification or any communication.