Disgusting stuff in the beer can which looked like spit

I bought 24 Black Label 'Currie Cup' long toms on 1 October at Makro Strubensvalley. Drank one on 2 October and when I got to the last sip, I drink out of the can, something slimy and disgusting was sliding out of the can with the last drops of the beer. I felt it on my lips and when I stopped and looked at it, it looked like a long string of spit or something even worse. I immediately vomited and now I refuse to drink the rest of the beers I bought. I want one of your representatives to come to my house to refund me for the whole 24 cans and I will never drink one of your beers again. I am totally put off with that experience !!! I tried calling your Johannesburg office for a place to complain but there was no answer. My cellphone plan does not dial 0861 numbers so dont bother telling me to ring them. Tell me where I can send photos of this disgusting thing.