Poor security/food/attitude/customer engagement

Had my fortieth birthday here 29/08 for a table of 34.The Function & Events Manager was abrasive, rude, and lack of customer engagement we had to deal with was appalling - was also warned that there will be no speeches or clapping - it was a birthday? Birthday gift also went missing from the restaurant (power bank with lightning charger cable, Miglio jewellery and Swarovski earrings) - which wasn't with my guests/cab service or lodge we resided at - as I checked with all of them. The event's manager never even had the decency of returning my call - which she said she would. The chef did call me with inconclusive evidence. I was at least expecting to hear what will be done from an HR perspective. For a 12% service charge, and not hearing the end result - we will definitely not be recommending this restaurant to family/friends/colleagues/foes for that matter. There is a lack of customer care and want to make your special event 'memorable'. The meal was mediocre and lack of atmosphere and warmth you would expect from a upper class eatery. Will definately vote with my feet and make sure no family/friends/colleagues hear about this.