Violation of Privacy!!! Urgent matter needs attention.

This morning I visited my local Clicks at The Islands shopping centre, Hartebee****rt Dam.. I swiped my Clicks Club Card and the cashier starting asking me all my personal details, I asked why, she answered, she needs to update my details.. After blurting out everything personal about myself I realised everyone standing around now know a little more about me. Not only is this embarrassing but also a violation of privacy.. What if my details crossed ******** ears?? They now know enough about me to attempt ***** or a ****.. Please notify all your stores, this type of conduct must stop immediately before a lawsuit ensues. Personal Details should be app**** via a document and in private.