These instances have been weird. But i have seen about 3 where someone bills you about 1 year after service. Example a local contractor did a job and i paid him the last day (so i thought) Months later he came up with a bill for some parts/items used (i paid it) but heavens 9 months later????? Seen two more similar things is the a local thing or an oddball way to do things. I would think one would figure the total bill and be done???? Another one was a company sent out bills on old stuff that people had paid but they claimed they had made a billing error example you had four tires put on your car last fall and get a bill this spring for labor!!!! What would you do????? On that one they did not push it if people did not pay.