Green Man Gaming not working?

Just use paypal.

Did you contact GMG directly?

GMG is rather buggy to begin with. The site has remembered and forgotten orders I didn't want it to, refused my register my credit card purchase, and even didn't give me a free game when I signed up for it and then disallowed redemption afterwards. But nothing catastrophic should happen, or if there was a problem, it can be rectified.

Actually I think I figured out the issue, I found this page: Link

And what I'm using is a Pre-Paid Visa Debit Card lol

The only other thing I need to do is see if my bank actually charged me

You may also want to check the steamgifts forums too. This subject has been brought up a few times.

They took your credit card info, but most probably they haven't charged you at all (unless you can see your purchased games in "Your Games" section of GMG website.
From my experience this is the result of their crazy security system auto-blocking some suspicious transactions even when they're not suspicious at all. That error may resolve itself in a few hours. You can also contact their support to fix this for you, they even have a separate ticket category for this particular error ("order not complete", which is usually the same error).

It happens to me everytime since I found the website. It doesn't accept my CC or PayPal either.

I wrote about this in another post, for those continuing to have problems. It might, I should say probably, has nothing to do with your payment provider. If you are trying to use a non-prepaid credit card that you know will work or if you are trying to use Paypal, then check out what I wrote about. Maybe it will help you deal with support.

You can read my post here.

I submitted a ticket, how will GMG Contact me to help?

i got error but its from my side -.- gotta hate my bank honestly

How do I actually tell if they charged me? I've been trying to figure that out... It doesn't show I have any games in my GMG account, so how do I tell if they charged me on my bank account?

GMG does NOT accept payment from select countries. They do not announce this fact. They just let you try and try to pay, give you the bullshit message on "gambling" and don't respond to your ticket for two weeks.

Thankfully I never actually got charged, now is there a way for me to delete my information on their site?