leaking Nappies

I bought a pack of nappies for my baby and they are leaking on the sides. The elastic entangles itself from the nappy and fall off. These nappies leak even after the baby has peed once. This is disapointing since ive used the cuddlers brand for both my kids and even recommended it to friends and family members. The barcode is: ***. I would really appreciate it, if this leakage of nappies is adressed before more mothers are disappointed by such a tusted brand.