Rage maponya mall- Mulalo

So I went to rage ,Maponya Mall with items that were bought as a gift for me(I obviously don't have a receipt) so I had to exchange due to size issues, my items were still in it's original packaging with price tags.that's when I went to your store . I was assisted by a lady by the name of Mulalo presentable young lady but full of bad attitude and knows nothing about customer service . I told her I need to exchange these due to the items being small and I'm willing to take anything in store, she asked me for a slip and date of purchase without even looking at the items at I still have the plastic in my hand at this moment.I told her dont have as this was a gift, and Im not aware of the date but my birthday was last month and rudely said Rage does not exchange without a slip , and I have had the items with me for too long. I asked how come cause you haven't even traced the item nor am I asking for cash and that I'm willing to take anything in store to replace the items. She then called her colleague (fair complexion lady) don't know if that is the store manager or not but Mulalo adressed her as"chommie"who then came and made a phone call I dont know where to but the call was not answered that's when I left the store. Your staff needs proper customer service training we cannot keep on dealing with people who treat customers like *******. Without customers how will rage pay her salary?! I need a conclusion on what to do with these items