Unhappy customer

Good day

May you please assist as I am so sick and tired of MTN I would like to cancel my subscription for *** as an external company called me and **** that they are doing a migration with my contract as I was paying R84, they advise that the service is no longer available as they informed me that I will still receive the same service in which was a *****ulent that took place, i have been sento from pillar to piat and now I have to cancel a contract and be charged for something that I never agreed on and I don't know how MTN works anyway I have made a payment at MTN branch of R235 and R210 and was informed that R12 also needs to be paid, and I paid R20 using MTN app because this is really frustrating me as I drove to vangate 2 times this morning and different amounts that I am informed with in order to cancel this contract as changes were made without my consent or misinformation. I have been calling since this morning 9am will now 12pm I have been informed 3 different amounts regarding my cancelation, I am so passed off.