I have this one customer that leaves for Europe every summer for 2 months. They are actually citizens over there. They always prepay me and it all works out fine. Until this year, they left and have been gone now since June. I stopped cutting their grass just last month because I have no idea where they are; cannot get a hold of them and I didn't know what else to do. We figured they were having trouble getting back into the states and kept cutting. I have been servicing these people for about 5 yrs now, and they are really good people, no problems until now.