Worst service ever!!!!

Worse service ever, been complaining via the Facebook page with no assistance, not getting assistance. "You didn't debit my account in November because you put in the wrong date, which I had to call in and correct, had to pay more than what was agreed on the contract which is R179, however the sms says I got a discount which is lies. In December again you deducted on your own time and again I have to pay more than my normal premium see below screen shot. Tracker is the only company giving me problems, all other debit orders go thru without any hassles, but not, "special" tracker that consistently gives me problems since I have joined."Oh the amount based on the first sms I received on Tuesday the 8 January 2019 from R 118.14 to R 297.14 based on the sms I got today (below screen shot of sms received on 8 Jan) Please explain to me how this happened