R
Resolute
On large jobs I get my materials upfront then do stage payments so I am fully paid up before the end of the job the final payment is the cream if the customer has been good as gold paying and no problems I will let them off paying, if the customer has been a pain and I have to chase for the money, then I will bill. If they dont pay at all I have found the perfect revenge, its called Japanese knotweed, It grows like crazy costs a fortune to irradicate and if you have it near your house and you try to sell it, mortgage companies will not give the potential buyers a mortgage.
It's also illegal to plant Japanese knotweed!!!