I returned the call but I've got a message "the number you have dialled is incomplete or incorrect. Please check the number and try again" I just clicked on the number that showed up to return the call.
I've changed house locks 3 times with restricted keys. And they still get in.

There's someone controlling if you are home, using the excuse of asking if you're interested in solar panels on your roof?
I received this kind of call tens of times lately, stating clearly that my house is in an heritage listed conservation area so no solar panels have been allowed.
And they insist.
Not even the dumbest retarded would call again again and again if it was genuine business