I had an agreement to pay on medical bill monthly. After sending in payment for XXXX it was turned over to a collection agency. This however, may not have happened if I had not gone to the billing office to dispute a charge. On several occasions when I pay my co-pay at the doctors office I am later billed for it. I tell them I have my receipt, they tell me its for Lab work, they send it to collection. Collection called to tell me its for Lab work, I go to Billing Office, show my receipt for office visit paid, they tell me its for Lab work, I paid the amount they ask for to get it out of collections. I called Insurance Company, they tell me I do not pay for Lab work if it is done during my visit. The Insurance Company calls the Billing Office, told them I was not responsible for the bill. The Billing Office was to call Insurance Company and Physicians Office to confirm charges, however they did not call the Insurance Office, Physicians Office or me. They will not accept calls from anyone concerning this bill. I do not dispute owing the medical bill, I do dispute the amount because they have accepted XXXX payments since turning it over to collections. I believe that a company should honor their agreement when given. I do not want to lose the physician I have now, but if I have to change I will go back to the old clinic ( never had a problem with billing ). I am not the only one that has had this problem, the ones I have spoken with are afraid of losing their physician. This company is to large to resort to these tactics. I have paid my bill down from around {$3400.00} to XXXX, why send it to collection now? I did not receive a statement this month, but I sent the payment I agreed to pay. The statements you receive are very confusing, its as if they do n't want you to know what you owe or what you have paid.