Poor service, billing, Poor business

In march 2018 i decided to downgrade my R93 package to R79, in store at Vangate Mall. I then noticed that the new contract was a billing for +-R250, and immediately raised the issue, and the consultants amongst one another said oh the codes for the special deal is on my emails and will fix it, 2 months go buy and i noticed my normal installment has gone up by R260 a month, i went back in store and again raised this issue only to find out they never sorted out the original issue, however this continued, each time I go in store each time i get told that its been escalated, 5 months later same issue, eventually after calling the call centers thinking i could explain the matter to them and hopefully find success in the world of customer service, they only do half the job, not to my surprise, so in anycase. It's October month, 7 months later my billing is still incorrect, my refund is still incomplete yet i get SMS saying your account is overdue, are you people sane? I got 2 contracts due for upgrades and cant even do that because my account is overdue because MTN cant simply fix up a small billing error, do you think its fair for a customer to raise the same issue 20 times wether its in store or call centre??? I get charged from April to Aug +-R345 a month for a R79 contract, so glad 3 of my contracts are nearly done. You would think after being 10 years with MTN they would at least have great custmer service, nor store manager or call Centre manager could resolve a poor consultant error. Leave me pondering how you guys compensate the poor customer after pushing poor debt reviews towards the customer.

Maybe there is light on the other side of the tunnel