I get such calls from medical institutions all the time. Guests are invited to a free examination, massage and other treatments. Lure with bait. I’ve known how it all works for a long time. They hire people in the call center and they call everyone in two shifts in a row with an invitation to a free visit to the clinic. As a rule, a person undergoes computer diagnostics, from which there is no sense. It seems like a disease is discovered, from which they offer to get rid of at a good discount. If there is no money, an offer to help in obtaining a loan immediately arrives.