Who called from 7868710152

They call several times a week on my unlisted & do not call list home number, and say "Hi Dear", do you need to fill prescriptions... I've done everything to get them to stop.  They keep calling. I've asked to talk to a supervisor and where are they are located.  They claimed Seattle.  Their number comes up blocked, so I don't answer any calls that are blocked.  

I looked up the number and it shows the Grendines?  It has too many numbers to be a US number.

Now they are calling my cell phone, which is also on the do not call list, and their number is coming up.

How do we get rid of these clowns?

What do they want, and what are they trying to pull?

To add to above post it came across on home number.
SIXTEL, LLC MIA
(786) 228-5250

78432110220 on Cell phone.

I recieved a call from sixtel llc at 10pm I also am on the do not call list.I got their number off of my att phone number look up.512-870-8068

Just recieved a call from the 5128708068 #,,,didn't answer but I sure know how to now...Drugs you say...this is the FBI.

Report them with the police as harrassing phone calls they will put a tracer on them! or with your phone company.