Yes. I do. We do them for people in my property. Perhaps if you explain what exactly you're trying to do: are you applying for a tourist visa and need an invitation letter. If so why you are booked into a hotel in Thailand to get a TM 30 if you aren't in the country. Your posts are just muddled and unclear. Which means people are "guessing" to try and answer you.
he's being rude to everyone. Thought he wanted invitation letter for tourist visa for 60 day stay. But now he's in a hotel to get a TM30 so not sure what he wants if he's already in Thailand.
UK passport. Each entry to Thailand you get up to 60 days with no visa and can extend for extra 30 days. Leave and re-enter you get up to 60 days again with no visa which you can extend for 30 days.