Bad tasting Coke

I bought a 1.5 litre coke and I am VERY disappointed. When we drank it the whole family confirmed that it really tastes bad. Even the cheaper drinks one buys at corner cafes tastes better. I don't know how to describe the taste but it surely left us with a bad taste in the mouth and I indeed drank from a different variant afterwards to get the bad taste out of my mouth. We will not support buying cooldrinks that tastes bad and we are in fact very disappointed. On the cap the BB date is 24 March 2016 and there is a code P6 as well as what looks like a time of 12:40.