Trash service

I borrow money on Wed, 25 Nov, and paid it back Via EFT on the Wed, 27 Nov. I still get messages that I will be debited. I have called, emailed no one is getting back to me. I have attached my POP on my account, I have emailed it to them. what the hell am i suppose to do? if they debit me I will reverse it and if it cause bad debt for me I will take this through ITC. I f it means they get shutdown so be it!