Jockey underwear

I have biugt Jockey ladies panties. Wear them for 1 month. On the elastic band around waist they all have tear off material. I am totally fed up. it is the 3rd time with 9 panties all tear. M full brief. I have panties for proof. What is Jockey underwear doingbubiut it. I can not keep on spending money on underwear as it is expensive.