Upsurge in rainmaking reach outs may be due to rising rates squeezing guys out who are unlikely to see pay raises any time soon.
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A lot of escorts raised rates substantially due to covid and now inflation. However most people working for someone else haven't seen raises in ages and aren't likely to see them in the near future.  
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With everything going up in price and no new income, expenditures have to be cut.

You really can't blame a gal for trying, and sometimes I appreciate advanced notice that a gal will be in my area because I truly would miss them if I didn't know far enough in advance.   Often I schedule to see a gal up to two months in advance or even more.

 
But, if you want to leave things friendly and still make your point that you don't appreciate their interest just now, respond with something like:   Thanks for reaching out, but not sure about my schedule these days.   I'll contact you when the time is right.

 
In other words, don't call me, I'll call you.