J's Diner, low quality food and disinterested manager

I would just like to complain about the quality of the meal I received last night the 1st of August 2018 and then the lack of attention to the matter from the manager. I ordered a seafood pasta and it was just as pricey as Pronto, a restaurant that does an out of this world seafood pasta. My pasta was swimming in a very bland excuse of a tomato based sauce and was overall unpleasant. My problem is that I find it unacceptable, when you are spending money, no less than at an upmarket restaurant, to receive such low quality food. I wasn't even mad, I just wanted to bring the low quality of the dish to the manager's attention because if I were a manager of a restaurant I would want to know if one of my dishes were unsatisfactory. The manager neglected to even pitch up at our table after we waited for him/her for quite some time, we paid the bill and left. Perhaps nothing will come of this but I would like the opportunity to let the manager know that the seafood pasta needs to be looked at again as it could do with improvement.