You're lucky, we do gameserver hosting too and we usually get 1 or 2 problem customers. Lucky for us it's a 2 man shop so if it's not me the customer talks with it's the primary owner so we can identify problem customer's right away. We also do IRC support, and have forums which are used for some of the questions but what get's me is stuff like this....
(05:54)·(Customer) hey
(05:55)·(Customer) can u take oof tha mod
(05:55)·(Customer) that says liek hs
(05:55)·(Customer) and counts down the time when bomb is planted
(05:55)·(Customer) ?
<I finally get a chance to speak>
(05:55)·(Pavix) statsme?
(05:56)·(Customer) ya wtf it is
(05:56)·(Customer) lol
(05:56)·(Pavix) It's statsme
It's nice to know I'm not alone