You should be able to get copies of payments made on your mortgage either from your bank (if you wrote a check) or if you transferred the money online you should be able to print receipt of that payment from your account on the mortgage website.
you can get copys of payments by contacting our bank and asking them for a copy of the payments. just talk to the bank manager and he or she should be able to give you what you are asking for. they might ask you some question so make sure you can answer them