pathcare- settled account then not settled ??!!!

path care is very quick to hand over people or send out final notice letters but when it comes to tracking payments there is no service at all. I settled a account in full a while back but phoning the office this morning I was informed that an old account was still outstanding. reference number given was the exact same one that was settled. so now I phoned the debt collection people again and again they told me it has been settled in full. so now after 6 phone calls to path care and their debt collection people I still have no joy. how can one place tell me it has been settled and another tell me it has not.....where is the communication between these 2 companies? is there any at all? I have never seen this poor customer service in my life....!!! best of all is that after I settled the account I have paid R200 more then I was supposed to JUST because there is a communication error between the accounts department and the people they hand you over to. then they tell you you used the wrong reference number is it my fault you have 600 different accounts and reference numbers for one person? no man this is really a huge joke to me where in your life have you ever seen this.....