I will do anything to get rid of it the first time. Otherwise you come back everyday. Who cares if they have your number? Most will delete it at the end of the day.
When I got my first cell phone back in '94, I was young and dumb and I thought it would be a good idea to save time by calling customers and giving my number out to any customer who wanted it.
BIG mistake. Within a matter of weeks it became unmanageable. I had customers giving my number out to their friends and neighbors, I had customers calling on the weekends, I had them calling when I was on vacation and demanding that I give them the number of whoever was running my route. I wound up changing my number and telling customers that I had dropped and broken my phone in order to solve the problem.
20 years later and there is only ONE customer on my entire route that has my number. She runs a business out of her home which is clear up on top of a mountain at the highest point on the route, and when it snows she will text me and warn me not to try and make it up her driveway and then we use our phones to set up an alternate meet point. She owns a one-ton 4x4 with a winch and has made it clear to me that I can call her any time I get stuck near her house. On a rural route up in the hills its pretty handy having a local with a 4x4 on my speed dial.