Snail for lunch?

Got a snail in my salad. Contacted Woolies to complain about the incident. I then get a phone call from the call centre which i was unable to take. The call centre agent leaves a voice message to alert me to give her a call back immediately - she leaves the CALL CENTRE number??? There are so many options to choose from when you call the call centre - how am i supposed to know where exactly this women works and where she phoned me from? I have since not heard anything from Woolies and its been 2 weeks. Pathetic service indeed.