Shocking poor standards

I recently stayed at the hilton hotel in Tower Bridge with my husband for new years eve, the main reason for our stay was to be able to view the new years fireworks from the sky bar at the rooftop amongst many of the other people staying there that night. To start with there was minimal to no parking but was told by the receptionist that ' is what is'. Following this we arrived to our room which was small and extremely standard much like a travelodge. (we paid £344 for the room) however fairly clean. Once we made our way to the bar and spent extortionate amounts of money as drinks were highly expensive, we found a seat outside and settled there for a few hours hoping to see the fireworks, after speaking to many other fellow hotel stayers there, they all confirmed they booked the hotel purely for the fireworks and a good view. At 11.55pm we were rudely shunned by the manager of sky bar and told to get inside as we were no longer allowed to be outside! Knowing everyone had booked to see the fireworks, they chose to cram everyone into the bar and close the doors!! As if that wasn't dissipating enough, upon requesting room service, I was told we're all out of food so you'll have to go without.
Having been so excited about staying at the hilton, I was most dissapinhed and upset with the service we received. No apology was given at any time and the standards were extremely poor and terrible. I definitely would not recommend the hotel to a friend and most definitely would never stay there again. Really very appalled by the service and it's a real shame that such a high branded hotel has such poor service. Extremely disappointed and would never visit again!