Poor service, unprofessional staff

A friend and i went there for lunch we were served food after eating. We asked for the bill and paid we didn't leave immediately after as we were finishing our bottle of wine. A big dark complexion guy, dont even know his name, comes to our table and rudely instructs we should get finished and leave as there's a booking for 5. That was absolutely rude and I professional to say the least. 15 minutes later there's no one going in. So explain that to me. If you have "bookings" atleast have the courtesy to inform your fully paying clients before hand rather then letting them sit, spend their money then chase them out. Definitely not coming back here! Definitely not recommending it to no one! ????