Terrible service and inferior quality

I have purchased a dress from Pick 'n Pay clothing, it shrank on first wash, I have reported it to them customer service, they sent me an automated reply, will comeback to me, a week later still no response. I resent the email with their response, then received a letter advising was escalated to the Head office, now 2 weeks later, still no response. Why would I want to buy proudly SA clothing from a SA brand if receive inferior quality and the stores do not even bother to come back to you after been a loyal customer for so many years.