Called my office many times in every day even in the weekends.
I got so stress when this number show up because I have to run from distant to come to pick up the phone or sometime I am busy with other customers. I don't want this number call us again.
Unless you can block the number that is the way to deal with them. My rule is if I don't know the number and especially if the number is out of my area code DO NOT ANSWER. If you are inclined to answer Do Not Answer Any Questions or give any info at all. Nothing.