NO SERVICE AT ALL!!!

I upgraded my contract about 2 months ago and had R3000 worth of airtime on this number at the time of upgrade. Aside from the minutes and data allocated to me on the new contract I used the airtime to buy additional data. I had numerous conversations with the consultant who processed my upgrade and the call centre about my airtime which I intended on using for data as and when I needed it. Not once did either of these people communicate that this balance would be forfeited if not used by a certain date. Much to my surprise, I check my balances and **** airtime gone. I would like this airtime reimbursed to me by way of data as this is a sizable amount of money to simply forfeit and if I was informed by your consultants I would have made sure I used it. I have tried to get assistance from the customer care line....holding on for almost 2 hours with no response from anyone. I call the head office and I he put on hold indefinitely in the hopes that I will tire and stop pursuing the matter and then I go to the Glen where I am met with a what the hell do you expect me to do attitude. PLEASE WOULD SOMEONE ASSIST..I AM DESPERATE TO SPEAK TO SOMEONE AND NOT LISTEN TO MTN'S PLS HOLD MUSIC