Paid up the capfin loan but still deduct in my account

I paid up all of my capfin loan and they even refunded me back extra money I paid on the 6th which I paid all of it on the 5th of December they came back again and tried deducting on the 7th agates I paid all of the money now the my deducted again on the 20th and I don’t owe them I am very angry with capfin because they messing up my account and if this is a case I will never ever do business with you guys ever again and all I want is my money reversed back into my account.