Pampers pants very disappointing

I bought a megabox of pampers size 6 pants for my baby, like I always do. I put the first one on and not even 2 hours later I carry my baby and his pants was wet, I looked at the nappy and it had burst at the side seam. I thought maybe it was full that’s why this happened. But then each and every nappy I put on him after this, would be the same, my son would wake up from his sleep screaming because his clothes and his bed would get wet. The nappy would burst at the seam so it can’t be blamed on movement because he’s not active in his sleep. I’m really disappointed as I trusted pampers and I stood by the brand when others told me to use other brands. I even motivated others to use pampers for their kids. I tried looking for contact details on the box or on the internet, it’s absolutely impossible to find an email address or something to contact them in South Africa.