Joet, be careful because the company you are dealing with will again try to debit money from your bank account. Inform your bank about it so that the debit can be stopped if it takes place. If necessary, you will have to close your checking account and open a new one.
After you have closed the account, the company will be calling you demanding for more money. Get everything sorted out before you make any agreement with them. Ask them to give you an itemized statement of all the payments received and verity it with your bank statement. Read the interest charges that must be mentioned in the loan agreement. After analyzing everything, then only propose any deal further.