CAPITEC BANK IS A ***** ON ITS OWN

In July 2020, I took Access Facility Credit with Capitec Bank for an amount of R249 500.00, with a monthly repayment amount of R6 755.30 for a period of 60 months. Last month (August) they deducted their first installment(monthly repayment amount) of R6 755.30 from my Saving Account, but to my surprise, the Outstanding Balance on my Access Facility is R246 758.52 instead of being R242 744.70. This is a simple Grade R calculation: R249 500.00-R6 755.30=R242 744.70. I do not know how did they come with an outstanding amount of R246 758.52 after they deducted the R6 755.30 from R249 500. On the 7th of September 2020, I sent them an e-mail to their Client Care Centre requesting explanations about this and I received a feedback on the same day saying that my e-mail has been forwarded to their Collection department and they will contact me in two(2) working days, but I never received any contact/response from them. On the 11th September 2020, I made a follow up to their Collection department and Client Care Centre since I did not receive any communication/response since the 7th of September and even today the 15th of September 2020, i am still waiting, they just do not give a **** about the ********** activities happening in my credit access facility.