I attended a real estate presentation in Tennessee. Was given a voucher for $300.00 in free gas through ClaimYourGas. I registered through their website and was given an ID number and then told to call to get a user name and password to download vouchers for redemption. The number is not valid. I have emailed 3 times and tried to call another customer service number and have had no response after trying for 3 weeks. I believe it all to be a scam. read full review »