Low quality underwear

I bought a few bras and panties last week wore one of them today and and the wire came out on both sides. The first time I wear the bra and the wire pops out. I mean the reason I buy them from woolworths is because of the quality. I dont understand how this happens. I threw away the slip bit i did use my card if proof is needed to show when it was purchased. Underwear is very expensive for this to happen after 1 use. I spent over R1000 for it because its important to me and i expect it to last. And what frustrates me more than anything is the fact that its Distraction, have you any idea how expensive Distraction is. You can tell its new just by looking at it. It was purchased in V&A Waterfront. Bonang promises us quality when buying her under garments.