Only way to contact them is here on the forums, but I hate to say it they won't do anything even if you manage to get in contact with any of the help employees.
If you have a great clan I bet they would help you get 2 characters up in gear and level fast. I know not what you want to hear but only have 2 options quit now or grind it back.
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Levelling the characters is not the issue. That's simple. Getting back all the guns I've lost is an impossible task. That's what I'm not prepared to go through.