Pathetic service to say the least

I cant believe im getting this pathetic service.<br> Im a loyal customer for 4 years now ive got 3 lines with mtn.<br> First my phone got ****** and i couldnt blacklist my phone due to the people striking. I did my sim swop in beaufort west after 48 hours nothing happend after going back to the store the lady never submitted the sim swop so i had to wait another 48 hours. I desided to do upgrade on my line and there was a problem on the system im now waiting 2 month for the upgrade to go thru. I went to pay my acount last month at the store with my debit card and payed the full amount. Today i found out the payment went never went thru but mtn head office can see that i did pay but i still need to fax my bank statement for them to unlock my line? How is this possible. Its like the client needs to fix mtns problem even if mtn said it was their problem on the system that the payment went off. the lady at the store also had the cheek to tell me i must pay that amount again<br> Is there a way i can get out of this stupid contracts.<br> Im sick of people that doesnt know whats going on at their work place.<br> GET PEOPLE THAT CAN DO THE WORK RIGHT THE FIRST TIME