One of the worst companies I ever had to deal with...

One of the worst companies I ever had to deal with. I have been using tens units since 2001 over 20 years this company has not sent me my monthly pads and batteries in 3 months and the last time they sent the wrong size pads. They never since I used this company did I ever go a whole year getting my pads and batteries. Out of 12 shipments yearly I probably get 8 to 9 shipments a year. They have the lowest reviews I ever saw.