The questions that were asked are legit questions and you skipped it.
It's a shady business practice to go after the competitors domain if ever it's really possible for you to do it.
This is why they should not be trusted at all. Whenever I see a representative of a certain service ignore legitimate questions and concerns, it simply means there is something off about them, and caution should be practised when attempting to deal with them.
Also, I think $200 is quite expensive, especially since I don't think these tasks require years of experience. Anyone can use the official reporting channels and submit the necessary evidence.
They probably think people do not know this and hope to exploit them due to ignorance, but this is public knowledge.