No assistance

Since I upgraded my contract isn't the amount that I signed for and I have to pay double and more for my contract.<br> I consulted the shop where I upgraded and the people I talked to doesn't want to work.I was promised that I will receive Documentation and 2 weeks after that I still didn't receive anything I contacted the shop again and I was promised the same thing for a 3rd time I contacted the shop and once more. all I got was attitude and rudeness I was told they won't help me with my contract and that I have to call another shop. <br> I cant seem to get any assistance out of Mtn I have been struggling since May and I'm fed up to get this sorted. <br> Can someone Please help me to get this sorted or to cancel this contract. <br> On this stage I think I will find more client friendly and people who will be willing to work at another cellphone company