Poor quality

I bought a pair of shoes from Woolworths about 2 years ago. I only wore them twice because they kept slipping off my feet. The second time I wore them, part of tbe shoe at the back, came loose from the heel (think it was glued together). Last week I took them out and had it fixed at a shoe store (very nicely done by stitching it, rather than gluing it). Yesterday I wore them to work, but because they fall off easily, I took an extra pair of shoes to work. Lunchtime as I walked out of the bathroom, the one shoe came loose in the front (also glued by the manufacturer). I spent a lot of money buying them (because Woolworths isn't cheap), then I had to have them fixed because of the poor quality, only to have them break in another place. To fjx that as well, will end up being more expensive than just buying a new pair of shoes!!!!! Woolworths, I'm appauled at the poor quality and workmanship!!!! I can send a photo, if Woolworths wants to see it.