Very poor service

I went to wimpy with my partner yesterday. We were met by a waiter at the door. We wanted to sit inside the restaurant and not on the outside sits. The waiter went to look for a table as they were a bit packed. He found one and waved at us to come through. As we were going, another lady came and told us there was a queue (that no one told us about in the beginning) and took someone to the table. They then left us standing there. No one was giving us attention despite countless effort to grab someone's attention so that we can be put on the list for that queue. We decided to sit outside. Still no one attended to us. I called the manager Max to ask for assistance and he was not friendly at all. He was very dismissive and not hearing my concern. After some time they let through people that came after us to a table. This had been 20 minutes since we were there with no assistance. I then went in and they quickly tried to find a table. The waiter was not attentive. He took 15 minutes to bring us drinks and forgot the other order i had made. After he eventually brought the food, he just dumped them there. I made him aware that he had our orders wrong and all he could say was we must just swap around what he got wrong and left us there. After a good 40 minutes we decided to leave. He then came running as if we were running away. We went to the till to pay. This experience was ridiculous. I am extremely unhappy about this.