Terrible communication skills

Horrible and very disappointed. Me and my family of 4 has been committing to come dine here for a very long time. But everytime something comes up. We came here for our 1st date and loved the variety of food dishes from seafood etc. Yesterday I did a booking to surprise her and we arrived with a great welcome. After eating our starter we said let's get some seafood,prawns etc. It was said no prawns on week days. When I called yesterday and made a booking i specifically asked if there's any limits on prawns the lady told me "It's a buffet sir, you can eat as much". No one communicated that's there's no prawns. Having eaten the calamari sterfry which was extremely strong that I cudnt even finish my plate. I'm very disappointed in the poor communication skills and I hope I get a call from management to resolve this issue.