Cell C does not value you even after 15 years

Firstly I am a Cell C customer for FIFTEEN YEARS..you would think I would be valued. I called in on the 31st of July to change my debit order date from the 31st to the 6th of every month; little did know that my next debit will be six days later. A consultant by the name of Chumisa called me, and i politely explained why I was so unprepared for the second debit of R1047 six days later, as my understanding was that when the consultant said , "your debit for the following month will be on the 6th" , I understood it as my next debit being for end of August. I explained my concern for upgrading and a bad profile, because i had to reverse the funds taken out the second time. This is what her response was. I WAS SHOCKED!! " Well i listened to the call and the consultant did tell you, that you will be debited the following month on the sixth and that meant August, so you WILL pay the penalty fee". I tried to explain that to me the following month meant my end of August amount, and asked her to listen to the part where i confirmed that my next debit will be the 6th of September. She responded again "well there is nothing we can do". I responded by saying, is that how you treat your customers and why have you omitted to listen to that part of the call, she responded in a tone of here's my name! here's my title ! Go ahead and complain. I AM SHOCKED!!! AFTER 15 YEARS, YOU HAVE NO VALUE AS A CLIENT TO CELL C. And to the consultant, if you didn't want to work on that day, you should allow a more deserving person to have your job. SO DISAPPOINTING.