No follow up

I reported to South African Breweries last year that we purchased a case of Castle Quarts and that the product had black floaties in and was flat. Their customer services contacted me and said somebody will be in touch. Well needless to say nobody has bothered to contact me after that phone call. Still waiting almost 5 months later. Great service guys! How long am I expected too keep the faulty product and what has happened to excellent customer service? This is not the first time I've had a problem with their products or to get a response, feedback or a solution to my problem. I really expected more from a company like SAB.