Worst customer service

Good day.

In March 2020 towards the end of the month I got a call from Finchoice (call center I suppose) saying that my account was not paid for November 2019. My question was, why are they only picking it up now? 4 month later why? I never got the answer. I got a call again this month March 2021, saying I missed a payment in Feb 2021(with a stinking attitude I must say). Yet my bank statement shows that the payment went through. I called them a few times and I'd be put on hold forever or they would pick up only to hang up in my ear, I'd callback then no answer. I have requested a statement a few times when they call me but I'm still waiting. Could I kindly be assisted in sorting all this out.