Bad customer service

I bought clothes Sunday the first of December at Woolworths Mall of Africa. The main receipt with items got lost however I still had the small one of my debit card with reference and everything as proof that I bought there. Yesterday I went to return some items for a refund. I was told that I can't by all the tellers that were working on that shift. They said the only option was for me to get a gift card because I don't even have a Credit Card. I clearly stated that I do not want a gift card I want to be refunded. I asked them to print out a copy of the the receipt they all said it's impossible, the sad part is that they were all ganging up against me and made me feel so uncomfortable. They later called Zama after I insisted to speak to a Manager and she asked me to come back after and hour or so because she still wanted to check the footage.. She was very helpful.. She did eventually refund me but the treatment I got from the tellers yesterday it was humiliating.. I suggest you train your staff on how to treat a customer. If they are not too sure of the procedure and policies without making clients feel small they must call the relevant managers and ask for help. Thank you