These guys are from a company called Axceler Software. They seem to be cold calling people in various companies through company main line number (through receptionist) to sell Sharepoint services. They are pushy and would insist on you providing information of person managing Sharepoint in your company. They have called many of my co-workers.

Same as above.  We do not need their services, yet still they call over and over.  The person I spoke with did not even know where we were located.  Good job researching us first I guess.  So now even if we could use them we would not.