Rotten to the core

We purchased some Nulaid eggs, Jumbo and there was still two weeks to expiry and there were rotten eggs in the tray. One doesnt expect this from a company like Nulaid. It has totally put us of ever buying Nulaid again as our whole bowl of goodies was destroyed as a result of the rotten eggs. We phoned the call centre, received a reference number, was told we would hear from them within two weeks. A month later we still waiting for any feedback. Shocking to say the least, why bother having a call centre?