Greetings Kirill,
I'm sorry to hear about the issues you ran into with the PvP tournaments. But I'm afraid at this time, the Support Team is unable to restore any missing characters, items, or currency. We'd be unable to restore any of the tickets spent or chests not received, as we simply do not have the tools to provide this service at this time.
Should a restoration service like this become available, it would be posted at the main site (https://www.guildwars2.com/en/) and forums (http://forum.guildwars2.com/). At that time, please contact us again so we can investigate the possibility of a restoration.
In the meantime, I would strongly urge you to send the bug report in-game, if you haven't done so already. This will send your information directly to our Quality Assurance team so they can investigate what might have caused this to happen and try to get it resolved as soon as possible.
If you have any other issues or questions, please let us know.