BAD customer service and dishonest amongst the staff, unreliable

I had a loan that i took to them in January this year and i settle it on the 15 June 2021, i call them and inform them the settlement had shortfall of 1200 so can i pay it while the settlement quotation is valid the lady said no i must send them proof of payment they will send it for closure so that the account is closed. 2 days after i sent the proof of payment i was told that the is a short fall that i need to pay i ask them but i was told that account will be closed and i wanted to pay it and i was not given that opportunity. I told them i am willing to pay the shortfall that was available on the day of the settlement i am not will to pay extra than what was a shortfall on the day of settlement. On the 25th June their debit order went through R5052.00 I told i must wait until it reflect on their side then they will refund me. Until today i have not receive the refund i have been taken from pillar to post with no answer if my refund is processed or not, i need this money to pay my school kids school fees. My contact ***