Worse service and quality from Woolworths

Beginning of the year in Jan I bought Walkmates school shoes for my thinking it’s a great quality. To my surprise the shoe broke within 3 months of having them, I went to Woolworths promenade mall to return. One lady told when how long did I expect them to last without even checking on them system, yes I didn’t have the receipt but my sister whom bought the shoes had the bank statement to provide the transaction. The lady didn’t want to hear anything from us. Now you can imagine the money we lost by travelling to there and shoes that aren’t good quality. I’ve also sent a complaint to Woolworths complaint department to this day I haven’t received any communication. I thought Woolworths was number 1 in quality.