For weeks, this number has called the house landline MULTIPLE times each day, all 7 days of the week. No messages. No voice. It's harassment, and I don't just randomly use that word. We are getting angry.
In the past these operations displayed out of service numbers. But it has become more common to display the number of an innocent third party. I find this practice especially disturbing.
You may want to consider a call blocking device or app. They are several options available. Do some research to see if you can find one that fits your needs.
4082642636 number really did my head in. They are just ruthless. I use 'NumberCop'. 'Caller ID' and 'Mr. Number' combo works well too. You will still see those scams calling you but al least you don't get disturbed. If your phone company provides free call blocking service you may want to do so.