I would like to ask why you call and when the phone is answered you hang up. when I do re-dail the line is busy or the phone ring and after a number of ring it will go to a busy singal.
Would you say this is a good business to call and than hang up? I have been in a business feild with the public  for many years and this behavior it not of GOOD business and I do belive of your action there will be no reply to this email either

Receive a couple of calls from AM H G every day. If I answer the phone they hung up. It is quite annoying.