Boston Market review: Email ad that wasn't honored

I received an email from boston market stating that day only purchase $20 in food and receive $10 off my next order. I complied. I showed the clerk my email and he entered my phone number. I specifically asked if this location participated as this was my very first visit to boston market. He assured me it was included.
My "points" for my visit went into my account, but my $10 reward did not. I have called, emailed, facebook messaged, filed online complaints, but no one answers or returns my messages. This is frustrating!
I would like to have this resolved as I enjoyed my meal and would frequent this restaurant. However, there are many restaurants out there vying for my business. If false advertising, or not following through on rewards is a habit of boston market, I will go someplace else.