Rejection fee

I had a problem with my bank account, so I closed it and opened a new one on the 31/98/2018. Yesterday 05/09/2019 at 14:22 I called Telkom in order to update my bank account on their system. I spoke to a nice lady by the name Kamo. She advised that Telkom will debit my closed account end of this month, and start debiting on my new account only next month. For this month I have to make a manual payment. When they debit my closed account it will cost me a "rejection fee" of R200. Which I refuse to be charged, as I have given them my new account number to debit. The solution they gave me is that I should borrow money in order to make a manual payment 10 days before my salary/debit day. Should I pay on my salary/debit day, they will charge the R200. I asked to speak to the supervisor, Kamo said the supervisor is on lunch. I requested that the supervisor call me after his/her lunch. I am still waiting for the call even now. I guess the supervisor took extended lunch. I don't understand why should I be charged a rejection fee while I'm going to pay them. It's not like I'm defaulting the payment. They have my new bank account, they should debit it. I didn't experience the same thing with the other companies. I called, gave them my account number and they assured me that they will debit it this month. No funny business like Telkom.