On XX/XX/XXXX I purchased a used XXXX XXXX   XXXX XXXX XXXX XXXX XXXX from XXXX XXXX   XXXX. At the time I was recovering from a bankruptcy that was discharge a few months earlier and was in the process of rebuilding my credit which limited my financing options. The dealership was able to secure a loan for the vehicle thru XXXX XXXXXXXX XXXX in XXXX, Illinois with and interest rate of 6.99 %, APR of 7.11 % and a monthly principal and interest payment of {$600.00} for 60 months. Its my understanding that generally any payment made on a loan would be applied first to any fees that are due ( for example, late fees ). Next, remaining funds of the payment would be applied to any interest due, including past due interest, if applicable. Then the rest of the payment would be applied to the principal balance of the loan. That was not the case with this lender and I was never made aware of this. Early in the loan, on two separate occasions, first on XX/XX/XXXX ( {$990.00} ) and then again on XX/XX/XXXX ( {$760.00} ), I  sent a payment amount over the actual payment due and expected it to be applied this way, but it wasnt. The XX/XX/XXXX payment was applied straight to principal, which was not an issue because I had also made the regular payment amount due for that month. The XX/XX/XXXX payment was also applied straight to principal. In the second instance, I had not made a separate payment for the monthly scheduled amount due which resulted in a situation where because of this, I was now considered at least 30 days past due for every payment going forward. I have uploaded a Loan Collection Summary and LNS Transaction History Report, both of which were provided to me by the lender upon request, and a document that I prepared showing the transaction history for the loan. As you can see, if the XX/XX/XXXX payment was applied as payment due for that month and the remainder applied to principal, the account would not be 30 days past due. I was also granted 3 extensions on the loan ( XX/XX/XXXX, XX/XX/XXXX, and XX/XX/XXXX ) for which I paid a service fee and understood that a larger portion of the subsequent months payment would go towards interest to cover the interest due for the months payment that was skipped and with each extension the maturity date would be pushed out. Beginning XX/XX/XXXX, I would receive a call from their collections department each month essentially forcing me to schedule a payment via phone for a service fee of {$12.00}. At one point, because I was unable to answer their call and return their voicemail promptly, they went as far as to reach out to family and friends listed as references on the credit application. Their collections department is extremely rude, arrogant, and nasty at times. There are many stories by consumers on varies social media sites online of similar accounts and situations with this bank. On XX/XX/XXXX I made what I thought was my last payment of {$280.00}, and come to find out that I still had a late fee balance due of {$1700.00}. None of the notices I received via mail provided me with a detailed breakdown of my loan and amounts due, which as a consumer I should have been made aware of this. Nor was I asked each month when called to schedule a payment if I would like to include the late fee as well.