Steers Tomato sauce

Bought a bottle of tomato sauce at PNP Constantia Village and when I opened it it all seemed normal I put it on my food then all of a sudden the sauce began to fizz in the bottle . The look of the sauce was disgusting and I wasted my time and money on it even tho I got refunded.always buy the steers brand because it is better than the other tomato sauces. I'm very disappointed