I have had a customer who uses me for all of there landscaping needs such as cleanups, mulch, planting and snow removal, but has another guy cut the grass. They claim that they have had this guy for 10 to 15 years. This guy has a bad reputation in town for doing lousy work. I have taken over a few of these guys customers in the past couple of years. I asked them if they would be interested in me cutting the lawn. I told them I could go 5$ cheaper than this guy because I do a lot of volume in his neighborhood . Well they said that they feel funny getting rid of him since they had him for years. What other techniques can I use to convince them to go with me for the lawn . ?