On november i called mtn online to add a device on my contract since well i have the existing contract,unfortunately the person who was assisting me she decided to do the upgrade instead which means it cancelled the unlimited calls contract that i had wit

On november i called mtn online to add a device on my contract since well i have the existing contract,unfortunately the person who was assisting me she decided to do the upgrade instead which means it cancelled the unlimited calls contract that i had with Mtn,from there i called them everyday to reverse their mistake and they told me that they are investigating the voice record.i ve done so many follows up.not even 1 day they tried to assist me .they promised to call me within a week ,we are in january now i havent get any call from mtn to tell me about the go ahead,now am struggling to buy airtime and data everyday which is more costing .whenever i call them and explain my problem tbey just hang up and leave me on line .i am so frustrated to a point where i am thinking to change to other networks.they dnt forget to send me a bill hence they are failing to attend to my problem. The other person told me that i must wait for three month to do the migration which is a problem to me ,i cant wait for so much.i told them they must give me the sky contract for 30 gig and 1600 minutes which i will be paying R700 till today i havent got the respond.i am tired of this bad service from mtn