Poor services

I had a Fasta loan which was handed over to their offices. In April I made contact with them to settle my account. They provided me with a discounted amount which i than paid the 11 April 2022 ever since i settled my loan i have received non stop calls regarding the remaining balance i have sent proof of payment on the day ive paid on email and whatsapp their agents is poorly trained their inconsiderate and non help at all. On Saturday the 5 June 2022 i app**** for a loan and i was advised my Fasta account still reflects a balance whilst ive been told by your company my account was closed i had to pay the remaining balance before my loan was approved ans i want my money to be refunded back into my account as your company advised previously ny account was settled and remaining balance will be written off i have highly disgusted in te services i have received so far. I want this to be resolved immediately.