I get calls from this company on a regular basis, though not always from the same number.  It seems to be some sort of pretext calling.  They ask for someone with my first name (which is not terribly common) but a different last name.  They say they want to transfer me to Ian Dorish with Quest software. They then always claim to have reached the wrong number and hang up.  I am fairly certain that they are simply verifying that the number they called is legitimate and will sell it for future telemarketing calls.