@azureline** wrote:and the explanation of the OP is not very clear about what work was actually done but I read it as there was another issue on the OP's property that needed attention and the OP asked the plumber to do the job there and then..........and come back to do another job, which he did not return to do.
The only job the plumber did was the "favour", and was supposed to return for the other job. Too bad his billing is as bad as his schedule keeping.
I give an estimate up front, write a bill when done, then the customer receives an official bill within a week.
I don't like bills hanging over my head either, I pay them straight away. I hate bills so much I pay my car insurance for the year in one shot (instead of the usual 6 installments).
Online banking is a lifesaver!
And thanks for the laughs Joono! 
