Here’s what consumers have asked with answers from Restaurant.com staff and previous consumers.
Same thing happened to me. There is no live person to talk to. They will give you a credit to use on another voucher but you will probably run into the same problem.
Burn it! Restaurant.com is not going to work with you at all. They are scam artists
Most likely because of people like me. I had never heard of this company, but, was offered their cards as part of a promotion. After being burned, I took the time to post my opinion. Others may not take the time to caution others...
Another dismayed Restaurant.com participant. Join the hundreds if not thousands of consumers who fall prey to their ploy and have been subjected to what you are undergoing time and time again.
Your question is not very clear but if your certificate is "unused" I assume that means it hasn't been used yet and it is available for you to use. Be sure to check for other possible restrictions and minimum purchases.
You probably can't since it is virtually impossible to reach the company. I wish I had a better answer for you.
And when you call restaurant.com Theresa K or some other staff member will politely tell you, in essence, you don't have any $135 value. They will find a reason but they will suggest you spend more only to loss that too. Be cautious.