Found a half filled can in my tray

<p>I recently purchased a 12 pack of 500ml Castle Lager at my local Tops at Spar store in Bergvliet. When i decided to open the tray and have a few beers, i found a can which was completely sealed but had only been filled halfway. The liquid contents inside also did not feel like beer. I have been drinking Castle for as long as can remember, but this was not a good experience. I am now thinking twice of purchasing this as i dont know what to expect. I also feel like i have been ****** of my hard earned money. I still have the tin in my possession.</p>