Called two days in a row asking for the person in charge of our merchant account (credit card machine). In both cases, I've explained that we don't have a point-of-sale terminal on premises, all transactions are done over the phone. Each time, they responded: "sorry to bother you then" and hang up. Obviously they don't make a note of that fact in their system or they wouldn't keep calling me.
They called every morning to our office and ask somthing I did understand clear what they were asking clear. So I just said we are not interesed and they laugh..
These are numbers that spammers use, the bots constantly calls and places any answered call into a queue. Spammers sit there and grab any active call. This saves the spammer time dialling so the spammer never dials the spammer only answers active on hook calls