It took them a week to call me back after several attempts to email them. I need to return 1 item and buy 2 new units. I was asking them too waive the shipping fee. The man on the phone got nasty and was yelling at me. He told me to use Amazon instead of his company if I wanted free shipping, then he hung up on me. ( He must have been having a bad day, at least he has a job while most of the country is unemployed) So that was I am going to do, take his advice and order from Amazon. I would suggestion to you that you do the same