Product: Vehicle loan or lease

I purchased a new XXXX XXXX XXXX from a dealer in PA. I utilized Yamaha Motor Finance USA to finance part of the purchase and I paid cash for the balance the end of XX/XX/XXXX. Apparently, when I purchased the XXXX XXXX  was also at the same time their statements were being printed and I had not receive my first billing statement until the second cycle of billing, which then showed the $ XXXX month a late fee and finance charges. After several phone calls with their collection agency I was finally contacted by someone at Yamaha who discovered the problem with missing the first payment. I made an additional payment of {$110.00} in XXXX to make up for the missing first payment and squared my account of late fees and interest. 
My billing cycle is $ XXXX month due on the XXXX of the month. I had established Yamaha as an automatic payment for delivery on or by the XXXX of the month to their " Lock Box '' location in XXXX XXXX South Dakota. I have a print out from bank of the deliver by dates for all of my payment to Yamaha which all show before the due date of the XXXX. 
After I finally got my account cleared-up on XXXX I auto paid XXXX without and issue, but Yamaha again hit me with a late fee and finance charges for my XX/XX/XXXX payment. The first I learned of this is when their collection agency called me on XX/XX/XXXX asking when I was going to make a payment since my payment was late. After indicating that my check was sent for delivery for XX/XX/XXXX, and If Yamaha can not process their payments timely, I should not be hit with finance charges and late fees. They told me to either use Yamaha 's electronic banking system to make payments or my payments may be late again due to the time it takes to deliver mail to South Dakota. So I contacted Yamaha directly again. When I started explaining the issue to the first person she told me she gets that complaint a lot, but they can not reverse any charges - you have to pay them to get them cleared. I asked to speak to her supervisor - she transferred my call and again I got another person who expected payment of the interest and late fees. Again I gave check numbers and dates they were delivered to Yamaha ALL BEFORE THE DUE DATE. Again I got " the only way to ensure proper credit was to use their banking clearing house ''. Use of their banking clearing house is not a requirement for their loan re-payment. However - if they are going to make a payment as late you are forced to used their system or pay interest and finance charges. My obligation is to provide Yamaha my payment on or by the due date Which I have since my first payment XXXX. Either XXXX is unable to process my, or other customers payments, or its a deliberate failure to process checks timely increasing finance and interest changes which their collect agency quickly tries to collect. Every incorrect statement that continues to be sent through the USPS after my contact to make them aware of the error constitutes mail fraud. Yet, they continue to have their collection agency call me almost daily at work, send me e-mails and letters monthly, yet each time I point out the errors they tell me " they '' can not fix the account I have to pay the indicated amount.