My mother passed away in January 2016. She had just purchased a new van. My brother and I as executors surrendered the van back to the dealership. The van was sold by the dealership but there was money still owing on the van in the amount of 5000. Now a collection agency via a law firm has sent my father a notice stating that he must pay the money at once. He has no money as my parents didnt have a lot. He is 89 years old if we decide not to pay the money what would be the consequences? He currently lives with his eldest son and his wife.