It is probably best to participate in the relevant forums.
Contact them through their website, or through the RuneScape forums.
Yes, JaGeX are the creators of RuneScape. Paul and Andrew Gower formed JaGeX.
IF your needing to contact Jagex HQ about anything visit their site at http://www.Jagex.com If it's a Runescape related complaint than you can post on the Runescape Forums under the Complaint section.
Yes, there is just contact Jagex to find out how to get into the Dutch version.
There is actually no way to contact Jagex for game questions. You can only contact them for bugs and other stuff. If you use one of the emails they provide (that is used for submitting bugs) to ask about the game and stuff, they will NOT write back. This has happened to me.
Jagex has been in control of RuneScape ever since its launch in 2001, because RuneScape creator Andrew Gower was the founder of Jagex.
runescape was made by jagex by the brothers paul gower and Andrew gower who later formed jagex in the jagex studios at cambridge,England
No, Jagex is in England.
Jagex
'Hacking' RuneScape in any way is violation of Jagex's Terms and Conditions. This is because hacking RuneScape or other systems of Jagex is an infringement of Jagex's intellectual property rights, which is against the law.
You could possibly contact Jagex through E-mail, their customer support, or the forums. Hope this helps! - Aaron
Runescape was made by Jagex.