This is the first time that I heard this one. May I know what companies are calling you? This is sort of marketing, but the thing is, crypto exchanges doesn't do such thing so I was surprised to hear and my curiosity was awaken. LOL.
What the OP is experiencing is kind of weird and very much unusual. No crypto projects had done such a thing as if they were doing a survey of percentage of crypto traders. What more weird is how did they get the number? Random guessing, social media or maybe the OP had mistakenly advertise his number. In any forms, such way for companies to do that seems on edge and very fishy.