#REMAKE 2020 -Mtn Taking your Money and making 2020 even more worse

I have been a mtn customer for over 10years with numerous different contracts over the years.On the 24/11 I was advised if I did not do an upgrade I would be billed out of contract rates as one of the contracts had ended on the 22/11.bearing in mind prior years I had taken contracts on the black Friday specials and had no issues 24 months later.so I did an upgrade.my debit order date is usually the last day in the month..On the 26th a debit order of R1305.25 was deducted,1stly not my debit order date and my debit order is usually R717.84.when I called I was told they don't know why it was done and maybe I asked for it to be done by fezeka ref ***..I advised the consultant that the extra money in my account was for medical expenses as I'm Going for an operation soon.she then sd she would asked for it to be refunded ..when I called to follow up I was then told only a query about an incorrect debit date was logged.i asked for my account to then be changed to cash .and still no one could advise why so much was deducted..this morning I spoke to Portia who advised even tho an extra amount was deducted I would still need to pay R 544 as that is my current amount owing???how can I still be owing after they deducted extra..ref ***..then later I was told by another consultant that I was billed 1 month in arrears and a whole long story about how they changed systems and the System would have automatically deducted what it looked like was due.my query is I've been their customer for so long,how is it only now they decide I'm one month in arrears and I have to pay the total amount due..I've always been told when I do an upgrade that I would be charged pro rata..how can I be liable for their systems changing?when I queried I,was given ref *** by Martin ,who at least seemed to have a little understanding of what may be going on..I will be very upset if my account is suspended due to them being *********** and their systems not being up to date..I would really like my money back as I think it is so unfair that money that I had kept for something else had to be taken from me..no one at store level can assist..no one can put me thru to the billing dept as queried are only escalated .I've logged a query on Friday but no one from billing as looked at it as yet.I'm so disappointed as I think their customer service is terrible and ********* ..when people used to complain about bad network coverage or being taken advantage of by Mtn I always spoke so highly of them and now to be treated like dirt,to just be another statistic taken advantage of..it's so frustrating to not have any answers..I would really appreciate money back please