How do u guys deal with customers that dont pay. I have some that pay at the end of the month but try to get most to pay in advance. The only thing that has worked for me was once a customer called from work to set up service, then didnt pay so i called her house and said i guess she didnt get my bill and that i would stop by the office on friday to collect. she called that night and said never to call her again and she sent the check that nite. i am sure its illegal to go to work to collect, but the threat worked.