Look here if you have bought revoked gifts:

1. Accounts listed above includes the owner of this account and one of his alt. trading account.
2. If you have bought revoked gifts, contacting the seller via these accounts for resolution is more effective than contacting Dispenser.tf.
3. If needed, these are the accounts to be reported to Steam support.

Step 1 - Sign in through Steam. (Optional)
Step 2 - Select the items you wish to buy and the correct payment option, Click Purchase.
Step 3 - You will receive a Trade Offer via Steam, Check the Offer and Accept. (If you skipped Step 1 you may need your Trade Offer URL - http://steamcommunity.com/my/tradeoffers/privacy)
Step 4 - Enjoy the game/whatever you bought! :)