pathetic customer service !!!!

i have been pushed from pillar to post with mtn , i have requested call recordings as i was told i agreed to early upgrade fees but they are refusing to hand this over to me .lethabo ngwenya is the sales consultant who helped me with my upgrades ,her manager Ramothopo maake has been cc'd in all my email communications, which not once felt the need tro call me back even though i requested him or her to . i then spoke to another manager divashen pillay who was so assuring on the phone that he will get answers and get back to me ,,, im still waiting he has given me his cell number and said i could call at anytime , now that im calling he is not taking my calls . i have just about had it with mtn , i have said that if this does not get resolved i would like to cancel , no one is getting back to me on anything .now when i call the contact center im hitting dead walls , explaining my story over and over asking for someone higher than these managers that fail to assist , im told they can not assist . how does one get heard at mtn as i feel their customer service is the worst ever !!! i do not want anything to do with mtn , i want cancelation penatly fees sent to me so that i can have nothing to do with them !!!!