McVities Hobnobs a health hazard

I bought 2 packs of these biscuits from Checkers Cornubia (South Africa) well within their shelf life. Both have a white mould present on the chocolate, the one pack worse than the other. I only noticed this after eating a biscuit, which left an unpleasant taste in the mouth and caused mild stomach cramping 30 minutes after consuming. This is totally unacceptable and a health hazard.