Shame on you Vodacom

I have assisted my mother in phoning vodacom on her behalf to cancel her contract the phone upgrades for her was nothing good to look at and too expensive. She had a R1000 plus worth of airtime on her account witch vodacom has faithfully deducted each month but since the contract is canceled the airtime has been taken back she has paid for this and therefore can not be done we were not informed that this will happen. Apart from this vodacom has not given her the full amount each month stated in the contract because apperantly her airtime can only accumulate to a certain amount this was not informed when we opened the contract either yet my mother paid her account each month. Vodacom service department in carnival mall has told my mother even if she goes to a different service provider they are are just as bad as them and she can go to the media it does not matter how arrogant is this. SHAME on you Vodacom!!!