Simba chips smelling like vomid.

Bought a 129g packet of chips with other snack items for a movie night. All were fine until I opened the simba chips. Wow, it smelled and tasted like someone has vomited into the packet. It's the first time I experienced this with Simba, and i eat chips weekly. So.far I have not heard anything from them as I phoned and raised the issue with them. Will update on any progress.