Worst Branch Manager ever!!!!

So I bought a dress on 30th December to wear to a NYE Party the following evening. After wearing the dress for a total of 8 hours, it began unravelling and the lace tore. So I tried to return it on the Sunday (a few days later) and was told it couldn't be exchanged because it had been worn. Well duh I really did not expect a R300.00 dress to fall apart after one wear. Also I didn't wash it in case I was told that I used the wrong cycle or whatever other lame excuse they could come up with to not exchange or refund the item. It's been 4 days now and still no resolution. I think the branch manager has no idea what customer service is. He was unhelpful and unwilling to assist. Big shout out to Gavin at Douglasdale Pick 'n Pay for going above and beyond the call in trying to get this situation resolved. Really appreciate all your help. If only other managers would be as polite and helpful. So disappointed in PnP right now.