Calls but doesn't answer.....probably trying to see if this is a working number

Called and said something I could not under stand.  They hung up

Received call 620PM on 1-15-16 from Katharine WRX at this number.  Did not return the call as I do not recognize the name and do not return 800, 888, or 866 calls I do not recognize, nor do I answer calls from callers I do not recognize.  First time I've seen this no.

Hang up. Left no message.

My grandmother just received a call from this number and the name registered on the caller id as Katharine WRX...I noticed my grandmother answering strange questions so I picked up another line to listen in. I heard the person asking what her height was, my grandmother repeatedly stated she did not know, so then I spoke up. I asked, "What do you need her height for?" The person replied, "She qualifies for.. (???)...Im sure she has arthritis and pain all over her body." My grandmother spoke up and said, "No, Im fine I dont need anything." The lady tried to say something else and I cut her off by saying, "No, she is NOT interested...thanks!!" The lady replied and said, "Alrighty then." And hung up....not sure if this was a legit company, but didn't sound legit to me!!