Faulty security beeper and rude security guy.

I was at Southgate Mall yesterday, Saturday 16 February, I went to Checkers to buy a few items, then I went to Woolworths at 13:40 to buy yoghurt. When I went inside, the security beeper went off. The security guy asked me to test my Checkers plastic and then my handbag, it went off with my handbag. He then asked to search my handbag for " possible items that could make the beeper go off". I refused. I refuse to be treated like a ***** or a ******** by Woolworths or any store for that matter. If the beeper went off when I was leaving the store, it's a different story, but not when I enter. My handbag is personal and I refuse to be searched anyhow. I then went to Pick 'n Pay to buy my yoghurt. I was at Woolworths last week to buy cake, muesli and juice with the same handbag and same items inside, the beeper never went off, so I was very surprised when it did that yesterday. I am very angry, the way I am such a loyal customer to Woolworths, I buy there so many times during the month. I went back and told the security guy that I will not be searched and I will take this to Complaints and he was very rude, he said I can go to Complaints. If this is how you treat your customers then I will stop buying at Woolworths. Upgrade your beeper to go off when people exit with your products, not when they enter with products brought at other stores. Clearly it was faulty. I work for my money, I am not a ***** or a ********. I buy cash at Woolworths, I don't even buy on credit. I am very angry.