Black Cat Peanut Butter

On the 5th of July, we purchased a Black Cat peanut butter from our local grocery store. We only went on to open this on the 7th. Upon opening, we hadn't noticed the blackish substance that was inside. Hate to say, but a sandwich was given to my daughter and after a few bites, she mentioned that it tastes funny. After examining the content of the bottle, we noticed that it was infested with black ants. I immediately contacted Tiger Brands and received reference number TB***. To date, I have not received any feedback as to what was actually in that bottle or any form of communication relating to this. I had to call today 08:55 to enquire only to be told that someone would get back to me, its is now 17:21 and still nothing. Please people, just be careful when buying black cat peanut butter, if I could attach pictures here, I would!