Who called from 6104843141

Called my grandmother yesterday, we don't know who it is or why called, haven't got another call back from them.

left a message about obtaining a low interest rate

Called me twice today, both times leaving a message saying it was my "last opportunity" to get a low interest rate.

The same nasty trick, posing as a lender offering to lower my interest rate.  (What interest rate?  They certainly don't know.)