Spur sauce off

I sent a direct message to spur to notify them of this and I never received any response. I bought spur sauce in a plastic bottle at pick n pay. The minute we opened the bottle it smelled sour, tasted even worse! After not receiving any response for more than a month I decided to buy the sauce again but this time in a glass bottle. I opened the bottle and the sour smell knocked me back. I assumed it being in a glass bottle it would be fresh. Really very disappointed and I don't think I'm ever gonna have the spur French salad dressing again. The reason I contacted spur directly is because they are the manufacturer and pick n pay the consumer. I have informed pick n pay of this but haven't had a response from them either.