How do you keep my phone number off of Google text me now apps

I  know Google  put apps on the play store that is like text me now for free  i have someone using my verizon phone and they keep call me and I had my number over 2 years how do you stop this and why does Verizon aloud this cause if I didn't have unlimited texts I be in big trouble cause in three days I have over 1000 text messages does anyone​ know.

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