Pathetic and ******* service to upgrade contract, cancel my contract immediately

I am so ****ed of with this rediculous and unprofessional service I have received from MTN. i mean i upgraded my contract on the 27th June via 135 number, i was promised my devices would be delivered the following week (1st week of July). The complete silence. Last week, i took my time from work find out what was the problem, after being put through to 3 different call centers people, i am told the application was pending or nt complet. Then yesterday i called again, no call of feedback from MTN. I was assured my contract upgrade application is completed with the devices i want. I was shocked to see that the R658 amount on the contract amount, which is is way above the amount that was agreed upon in june, which was R499. Today, i deciced to cut my loses and cancel my contract, again using the 135 option 3 (that states option to cancel my contract). I spoke to Sinethemba Nsele, who told me she cant cancel my contract, i must call mtn direct, i mean seriously, i refused i will waste my time and energey with this unprofessional provider, MTN. I am done. I want my contract cancelled today, MTN has lost me and my family. I will not ever use thier services, I intend to port my number to another service provider by close of business tomorrow. I am done. this is rediculous really, pathetic service that i will not tolerate, its unacceptable, i pay my account in time for 24 month an this is the thanks i get from mtn, that is very expensive. CANCEL MY CONTRACT TODAY. I AM FEED UP and DISAPPOINTED WITH MTN, I WILL NEVER USE THE SERVICE EVER.