very disappointed

I am very disappointed in the service we received from the stuff and the manager last night 26th May 2015! My husband booked us a Groupon voucher for our anniversary from the Groupon application on his phone the voucher was not sent to us on email but we were able to view the voucher on the phone just not print it. After they lady in front not wanting to help us without a printed voucher we called for the manager but when speaking to the manager who basically told me I am a **** when I phoned to make the booking I was told as long as I had the voucher on my phone and voucher codes are there we'd be fine and didn't need to bring anything else! when trying to show to the Manager that we didn't have an option to print she rudely said she can't read it cause she doesn't have her glasses! My husband then sent a screen shot of voucher to the reservation email address and then they tried but first told me the code is not valid and then tried again and then it was ok and we could only then be sited by that's time I wanted to burst into tears and leave! ! While walking to our table all the staff standing around the front looked at us and laughed. We weren't even greeted when leaving! SAD!!