Lack of communication from Accounts department

Well what can I say and add to all the other accounts problems. Dealing with this Dr is a disaster! Will never ever make use of there services ever again. Due to their lack of communication I was not notified of short payment from medical aid. Now, after more than a year and a half of NO COMMUNICATION, they want to hand me over and make me pay more than double than what is owed. The accounts department fails in every way.