Outstanding Account not been processed for payment

Despite constant telephone calls and emails to the Liberty Medical aid, and speaking to the customer care<br> service who then sends your complaint onto the claims department, my outstanding account to Drs Vermaak and Vennotte dated 5th June 2015 till the date my husband died 25th August, 2015 the account has still not been settled. The amount outstanding is R2132.61. They now say that this is a stale account as it is longer than 4 months. WHY WHY. I have been fighting with these people to pay the outstanding balance almost on a daily basis together with emails sent to a lady called Miranda at the call center as they, themselves overlooked these items when the statements sent to them regulary and sent to them on time, was not paid. It is their error and they are not prepared to take responsiblety for their error. I am now getting final statements and letters of threat from the Blood people due to Liberty Medical aid claims department lack of co-operation. I need this account to be paid and settled immediately to Drs Vermaak and Vennotte or further action / s will have to be considered and taken.