Appalling customer service

The most appalling customer service there is. I booked for a group of friends to have dinner and drinks there. I also organised with them for drinks which already was paid in advance. On the night of the dinner, they denied I ever paid for any of this, it took 3 hours to sort it out, nevermind the embarrassment of this. They advertise on a 3rd party site hyperli for vouchers you can buy but fail to reconcile the number of vouchers bought. I gave you a rating of 1 star solely because there isn't a negative rating. Would not rate they sorry excuse for an establishment.