"Double the Difference" is more like "Double the Trouble"

I bought one of the instore specials at PnP Tygervalley and the prices was wrong. I got some lame excuse to explain it. There's no point having a "double the difference" policy, if we as consumers need to study a manual just to understand the many rules. I thought the idea was to keep you honest in your pricing... but all I experience is a marketing stunt that can't be re**** on. Now I'm going to wait for the generic message that accompanies complaints like this, which is as useful as one as the call centre queue messages that say "Your call is important to us" and then no one ever answers.