Cotton On Poor Underwear Quality

I am incredibly disappointed and upset about the quality of Cotton On seamless underwear. Less than 2 month ago I bought 5 pairs of underwear that are now literally falling apart due to the fact that they use glue instead of stitching. I spent way too much money to be stuck with tatty underwear that is now falling apart.

I am appalled at the poor quality used to make the underwear and it is embarrassing for me to be even in the gym with those items. If i am sold a product at a certain premium price then I expect good, durable lasting quality.