Hole formed after 2 months

I purchased two pairs of these joggers about two months ago. I really like the way that they feel/fit, however a hole formed at the waste seam in one (see photo). I don't exercise in these joggers, and use them to sit around the house or go around the city on weekends/afternoons. The other pair has been fine so far, but I liked the ruined pair's color and fit more. This is really unfortunate as I was hoping to buy another pair in another color. There was a contact E-mail on the tag so one can contact for any issues, but no one has responded.

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