Refuse bags damaged

I bought no name refuse bags from the San Ridge branch in Midrand and as the person who helps me keeps going through them to change the plastic from the bins, we find that there is an opening on both ends, which means it cannot hold the *******. We thought it might have been 1 or 2 or maybe even 4, we were willing to live with this but it just gets worse. These plastics are just faulty, it's annoying.