Fix posts that sound like a robot wrote them, with a before and after

Help me fix how my business sounds online.

My business: [what you do and who for]
Two or three recent posts: [paste them]
A message I've sent a customer that sounds like me: [paste a text or email]
What customers say about us: [e.g. "straight-talking", "they always explain"]
Words I'd never use: [e.g. "solutions", "passionate"]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. A before and after of my weakest post: the original, a rewrite in my real voice, and what changed in 3 bullets.
2. My voice in 3 words, each with a "sounds like" and "doesn't sound like" example from my own writing.
3. A swap list: stock phrases I use, with plain swaps.
4. A one-page voice guide anyone posting for me can follow: sentence length, emojis or not, how we greet and sign off.
5. A 3-question check to run on any post before it goes out.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts or results. UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.