Surprise bill from Telkom

So I recently switched banks and didnt change my details with the company because I decided to pay via EFT since October 2018. I was never charged a 'non-payment' fee on the debit order even when i payed late (end of the month or start of the new month).

So naturally I didnt bother changing the debit orders or even removing it because it didnt affect me in any way..until last month (December 2018). Now I am suddenly being charged R202 for missing the debit order date (25/12) even though their records state a payment was made on the 27/12/18 via EFT.

Now imagine my surprise when I got my bill of close to R700 for January 2019!!

I contacted the customer support via their online chat option where I received absolutely no help what-so-ever!

They can't tell me why I am being billed this now suddenly as my contract with them is drawing to an end (the contract expires 20th Feb 2019). They apparently cant remove debit orders either for some reason and I dont see the point of changing my banking details now since it will only come into effect at the start of the new month which also happens to be the month my contract ends with them.

I was only told that I can avoid being charged this if I pay via EFT 10 DAYS before the debit order date which is impossible since I only get payed at the end of the month.

So now I am stuck in a predicament but I refuse to pay the R202. Its not like i am not paying them and my contract is ending in a months time!!! And the best part is that the agent that helped me didn't even try to help me...its like "oh well, just pay the money even though the bill was payed in the month and therefore not late"

So please be wary of this company, they are money grabbing, unsympathetic people. They do not provide solutions to assist the customer with only the mandatory services being provided (ie, we sell you a deal, you pay us....anything besides that we cant help with unless its for another contract)