Is it just me or does google have a terrible customer support service? They only have email, which they don't even respond to. Does anyone have any other ways of contacting Google?

What are you trying to contact them regarding?

I have emailed google on a number of occasions, And i have never waited more than 48 hours for a reply.

Phone / Fax
http://www.google.com/intl/en/contact/index.html

I have also found google to be very helpful, and they do seem to respond rather quickly, but maybe I just caught them on the right day. Send them another email and you should hear back from them.

where can I find their email address?

They don't hve email addresses as such, they have email forms to fill out.
Adsense contact
Adwords contact
contact google search

My adwords account went balistic earlier this week - racked up over 2 million impressions and hundreds of clicks even though the campaign was paused.

I emailed them about it, and the next day I had an email from them confirming that they had found a bug with my account and that they'd be refunding me the money I was charged for clicks.

I've had this happen a few other times and they've been just as responsive.

And no... I didn't mind the free traffic one bit

I have also found google to be very helpful, i never waited more than 48 hours for a response. Usually it's less then 24h.