Drop in Standard and quality of food

We were at Mundo Vida a few days ago, we saw the menu was totally changed! The previous owners menu was top quality! And the place was always busy!!! We ordered a mild peri peri chicken and a hamburger. Cut a long story short, the food was an absolute disappointment! The peri peri sauce was majority oil it tasted disgusting! Our chips were not as of the previous owners quality they were drenched in oil no spice!!!! The chicken was sent back we complained about it, the new owner came over to ask how he can fix this? I'll give him credit for that. The hamburger had no flavour, chips drenched in oil! Overall the food was an utter disgrace! The previous owners menu was top class until she retired.. If I was the owner of this establishment, I would've given the whole meal on the house!!!! Quite honestly I don't think the owner really cared!!!!! We definitely will not be going back there! I'm so disappointed in the quality of their food and change in menu! Our waitress felt so bad for us because of our disappointing experience. Mundo Vida used to be the best restaurant to go to, unfortunately you have lost a customer because you (THE OWNER) simply couldn't care! It's actually so sad how a place like this has changed and not for the better!