Medicross

I visited Medi cross Benoni dental department last year October. During the filling out of the forms I was asked to email copies of my medical aid details and ID documents to them. Which I did immediately. Suddenly I'm being hounded now to pay the full amount outstanding. Apparently they submitted the claim to the medical aid ,but messed up the dependant code. Seems like they never corrected it, and now the medical aid wont pay as its been more than the allocated time to submit. So how fair is it that I must pay this account ,if they did not correct the mistake on their side timeously. If a provider is *********** in their jobs, does this mean we must keep paying. I am paying hectic amounts to medical aid so I don't have to worry about these bills. They say they could not phone me to find out about the details(which were correctly supp**** to them)But now they can call me 24/7 for money and to threaten me that they will hand over the account. I feel this is very unjust. I refuse to pay for something that my medical aid was going to pay for....Had they done their jobs. Had they contacted me Whitin the time frame I could have secured payment from the medical aid but they say they were too busy to follow up. Well guess what I have been busy doing my job too.....