My doctor ordered me to take several medical tests. He did not disclose that there would be a copayment cost with each of them. He is obligated to disclose this to me up front as I am a XXXX patient. I wrote a letter to the medical company saying I should not have to pay the copayment charges as I am a XXXX patient and am supposed to be told up front if there would be any expense to me. The medical company did not reply to my letter but shortly thereafter I received a letter from a collection agency that I must pay. The medical company saying I owe {$100.00} is XXXX MO XXXX. The account with them is " Re : XXXX XXXX XXXX Acct # XXXX {$100.00} ''. The collection agency they used is : Transworld Systems Inc. XXXX XXXX XXXX. XXXX XXXX, XXXX XXXX, MI XXXX. Their reference is : XXXX XXXX XXXX XXXX, Total Balance {$100.00}