Who called from 6502772614

Left no message.  Caller id shows "ST"

This number has been calling my 90 year old mother several times a day for days.  The call ID says "ST", won't leave a message.  She won't answer the phone if she doesn't know who it is, 'cause she can't hear what they're saying anyway.

Got a call from this number.  They said "Don't hang up this isn't a sales call".  I hung up without listening to rest of call.