Outback Steakhouse review: Dine-rewards.com

I went to dinner by myself, for my birthday, at outback steakhouse, # 3917, on january 15, 2019. My bill total was $ 21.18, and I did not receive any rewards. It was outback steakhouse # 3917. This was my first dinner, after I had signed up for the rewards. I even gave my phone number to the waitress, who was leticia b (#441). I checked my reward balance and it was 0. I thought you had to spend $ 20.00? To receive the reward? Not a very nice birthday present. Ticket # (number at very top left of customer copy) is 0116, dining on january 15th at 5:47 pm, svrck: 3. So, kindly let me know what's going on.
Sincerely,
Sylvia sheaffer