I've gotten quite a few, all similarly written, all need lessons in grammar, to the point of being humorous!

I need your service to file my 2021 return extension, I have W2 and Sch C with other incomes
Let me know your pricing, I can send you a copy of my 2020 tax return to go over it
Cheers

(this one sent by the Managing Director himself...my goodness!  Oh, ...the Managing Director forget to add his company name, address, phone number.  Not much good in managing I guess.)

and

I actually intend to change cpa for my 2021 tax return, Would
like to know if your firm is open to accept new clients. All my
documents are completed (what do you mean, how are they completed?)

Kindly advise on how to proceed and if I can send all the
available documents and whats are your fees.  (Say again?... what is are your fees?)

These are soft inquiries, if you respond, likely the hackers law abiding taxpayers will send you a link to download some malicious code their tax documents as these scum of the earth future clients genuinely need your help.