I'd like to clear up some confusion here.
1. Client_Trolling is not hacks. It's just a poorly coded addon made by a novice. It looks like a 15 year old wrote it. That is to say it's bad.
2. It says in the title "using spyware," which could for example be a RAT, which could easily detect which server he was on.
3. Just because someone has done stuffty stuff doesn't mean that they're automatically always lying. It's bad to assume things like Akio is doing, though I wouldn't blame him for being suspicious, I certainly am too.
It doesn't seem they were trying to do any actual harm, it sucks that you had your number leaked but so few people will have taken notice and even fewer kept it that it's really not that bad. You really don't have anything to worry about. Definitely a richardish thing to do though.