One of my lawn service cutomers is rufusing to pay for the final cut of 2001. She called to stop service for the season on 11/7 but she thinks that she called on 10/19. We keep detailed route sheets using Clip & the foreman on the crew makes notes as they come up. All of our records indicate that we are not mistaken. I have sent her the copies of the route sheets showing how we handle daily jobs. We are very confident that we are correct. The bill is only for $55, so should I get collections involved and risk not having this customer for next season or just forget about it and let her think that she is right?