How long should you let a commercial account get behind on invoices? I have one account that is constantly 30-45 days behind. When I got the account I was told all invoices would be paid in 10 days. When I call to find out about payment all I get is the runaround---we'll check into it and get back with you. I never hear back from them. I don't want to lose the account but I feel like it's getting to be too much hassle getting paid. Any suggestions would be appreciated.