One of my customers has stopped responding to phone calls and emails. They have a balance of about $20K, and it is four months past due. We have sent several notices and have offered payment plans with no response. This customer has several other locations with us and has always been a little late to pay but not like this. At this point, the relationship is not worth keeping IMO, and I am ready to terminate all of their accounts. We have never had someone not pay us like this (in 25 years) and have no idea how to go about collecting. I have been trying to avoid going through a collection agency but at this point, I am OK with losing a little cash.
Any advice would be appreciated.