Flies in our dessert, absolutely disgusting

The pizza was great, but I am very disappointed with the dessert, the beer and the pasta I got. Firstly, the dessert had two flies in. Secondly, the beer seemed off as it seemed sour and watered down. When the bill came we were charged for the beers after sending them back, and when I spoke to the manageress who was managing on the 18th of April she asked us whether we just didn't like the beer and I informed her that it's one of the beers we always drink but it seemed off here. She then just halved the prices of the beers but we still paid for it despite the flies in our dessert. Thirdly, I specifically asked the waiter about a pasta, requesting whether it is a creamy pasta of not and he informed me that it is, but when it got to the table it was the exact opposite of creamy. This place was terribly disappointing and I won't support it again.