Hifi Corp false advertising and pathetic service

Hifi corp advertised a sandisk 32g flash for R109 rand. I drive all the way to their pathetic service kenilworth branch and they have it for 129.90 so tell the woman at the cash register it was cheaper but she refused and sold it to me for 129.90

I logged a complaint and they unhappy with my attitude and frustration and ordering me to take it back. My god a waste of time driving up and down and waste of petrol