I am having the same call, he is phoning  a few times a day, says he is Richard from microsoft. I am going to ring microsoft tomorrow.

I keep receiving a call from this number and the company calling is claiming to be detecting errors on my computer when I asked him what the return number to call was this was the number given.  I have had previous calls the same but they claimed to be calling from "Windows" I know this is a scam and would like to be able to report them somehow.