Kall8 Kall8 fake calls with no one on the line and a fake number when you call back daily Seattle Washington

I've had this happen before wtih Kall8 and I've complained. It stopped and now for some reason it is non stop. I get fake calls all day long, and even at 3am in the morning. When I answer the phone no one is there, no sound, it is automated. If I don't answer the call, it goes to voice mail and it is always exactly 10 seconds of silence.  I don't know how they can think that a person that owns a business isn't going to  know what they are doing when you rec. 5 calls a day from no one.  If you try to call the number back, it isn't a vailid number.  They are trying to run your bill up with the fake calls. This should be fraud.