They call at all hours of the day and night and hang up.  I've finally blocked this number.  Before I blocked them though, I stuck a bullhorn in the receiver of my phone, set it to siren sound, and blasted their eardrums out.   Oh, what fun!  LOL.    I'm sick of scammers.  They should just give up.  I can't imagine anyone responding positively to these type of phone con artists!