Cheap underwear material but highly priced. Dissatisfied customer

I bought 3 panties (underwear) from woolies about 6 months ago. Each one was around R120 each, so I thought if it is that expensive maybe the quality is really good. Within the first month the first one started to rip by the elastic on top, now they all torn. They have all been hand washed and these are the most expensive panties I’ve bought so far, because i had to buy them individually. I am so dissatisfied and I feel like woolies is just becoming expensive for nothing. I now have to go buy new underwear somewhere else because I am afraid of this happening again. I am very disappointed.