MTN lies and gives no feedback for months

If I could give minus stars, I would. Actually wish I could change providers at this point! An MTN Sales agent called me and **** about costs being added to your account for a package migration after you specifically ask if there will be costs involved and you don't want your monthly amount to increase. This happened in September. In October you get deducted almost 3 times more and you dispute it they tell you the case comes out in your favor and you will receive a refund, 2 months later after following up and getting no proper feedback via email about what is going on, phone calls and sending you from Billing to Mondo and so on, you find out your account is with someone who no longer works there (after being so called escalated), then they start their process again 25 November, still being deducted more then I should, now we are on week 3 again, I call everyday, no one can assist with the refund, I get one line answers that make no sense from Mondo, Billing has no clue what's going on and can't see anything on your profile. You can't ever speak to someone who actually assists you, they never call you back but it gets escalated regularly. Disgusting service!! If my contact ends, I'll NEVER go back to MTN!