Expired chocolate.Tiger brands

I have purchased 5x beacon slabs from Game store at the pavilion in Durban. However one slab was expired. I have written a complaint to Tiger brands. They have responded and asked for the batch details of the chocolate etc. Then the response was to return to the expired product to the store. I stated I cannot go in to do the return. Thereafter there was no response.I suggest the public doesn't buy beacon chocolates because most of them are being sold even though they are expired . Who knows how many have consumed expired chocolate and has had food poisoning. Disgusting service from Tiger brands.