Mtn frustration

#Mtn I am a woman of 76 years. In an Mtn shop in Howard centre Pinelands i was persuaded to accept an upgrade after my contract expired in March. I tried to reverse the contract within the alloted time and was told that i was too late. I have been into MTN shops numerous times and have not been adequately helped. I have been without connectivity for 6 weeks now. This has been very stressful.