No answer

i have been trying to call Mtn customer service for the past week i wanna cancel my contract and every time i call and choose the option to be transferred to a consulted the phone rings forever until it hangs itself up sometimes it doesn't even go through ,i don't know what to do anymore because my contract has reached its 24months i need to cancel and be on prepaid but nobody answers on the customer service desk ,this is frustrating and annoying.i hate mtn right now i just wanna be out of their network for good.can someone answer the phone i wanna cancel the damn contract.