I have come across these websites claiming to write Wikipedia articles if you paid them which is really weird because Wikipedia will let anybody write a page if it’s good and about something important and notable enough to have a page on it. Even if these sites did make a page about something it would probably be taken down from Wikipedia as soon as it went up unless it was on something notable.
Here’s a list of the names of websites doing this that I found most of them have numbers or emails on their sites.
www.usawikispecialist.net
Premiumwikiconsultants.com
You can find more sites like this by searching things like “pay to have a Wikipedia page created” or something similar.