MISCOMMUNICATION FROM AMPATH LABORATORY

I RECEIVED A PHONE CALL THIS WEEK AGAIN FROM A CREDIT COLLECTOR STATING I OWE AMPATH LABORATORY MONEY. THIS IS THE 3RD TIME NOW THAT I HAVE CREDIT COLLECTORS PHONING ME STATING I OWE THEM MONEY AND I MUST PAY WHERE I HAD NO CORRESPONDENCE FORM AMPATH STATING I MUST PAY THEM, THIS PUTS ME IN A BAD LIGHT AND I END UP HAVING TO PAY EXTRA MONEY AS I NEED TO PAY THE CREDIT COLLECTORS FEES AS WELL (3 DIFF CASES)