MTN (How can I make your day...) Helpdesk doesn't! !!

MTN is an absolute joke at their call centre. 31 March I paid my monthly account -EFT R1800. That evening a debit order for R1900 odd went through as well. I contacted the call centre for a refund and was given a "ticket" number for reference. Monday I call again. New ticket number and "closed" on the same day, with no feedback. This carried on for a week with regular follow ups. On the Friday 8th I was told that a refund was issued to my bank. I also needed to buy airtime which didn't work. This was "supposedly" fixed. I received an SMS saying that I cannot make calls and need to DEPOSIT R1800 immediately as my calls have been suspended. I went to my local branch in Ladybrand where I had excellent service but they couldn't rectify either problem. I was also busy with an upgrade and this was refused as I was R1800 in arrears, which is incorrect. No arrears - they owe me R100. So due to THEIR errors I cant make calls, can't upgrade and I he vent been refunded yet. PATHETIC! Their help desk (135) sucks (If you eventually get through) and there is no way that you can speak to a superior person.