Mar 20, 2015
It's not a sales call, it's a scammer and your husband is wise not to answer ANY unknown number. Doing so can easily plant your husband's phone number firmly in the scammers' databases, and it will be shared among all the crooks who will try to scam him. Read some of the other posts in this thread and you'll get an idea of how widespread this practice has become.
I also suggest you and your husband see a counselor about your lack of trust for him.