Telkom disgust me

I have a telkom account and it has been doing great until last year November 2023 when they suddenly changed my debit order date from the 25th to 5th each month. Called them and they told me I made the changes and I asked them to change it back, I thought they did but december 2023 again they did not deduct and made double arrears on my account. My installment every month was R1766.66 now between november and december I owe them R6200. Im not happy atall and when I went to 1 of the branches they I could not explain, we called in client care and they could not give me an answer but told me I owe such an amount. I am very dissappointed and I will never afford R6200 what will my children eat.

Ndilisa Sonia Songwiqi ***