Bad service

We purchases clothes at the fix Jabulani mall and had to return the leggings ,when we returned the leggings we did not receive a receipt as they said we got a discount on the leggings were a size large .We took extra-large as large was small however the extra-large was too big as, which shows that the size cuts are also not accurate. We tried to return it yesterday and I explained what happened ,the lady kept asking me for the dates after I had told them it was in May or June, are we supposed to worry about dates now when we shop.

The lady told us she cannot assist us because policy on the slip says 30 days exchange. HOW ARE WE SUPPOSE TO KNOW About THE 30 DAYS IF THEY TOOK OUR RECEIPT .Were we not supposed to get a new receipt which the 30 dates starts from the date of exchange ?They looked for the old receipt on their records which is dated 17 May .When her colleague asked her how can they help us she said what does the policy? Is that how we are supposed to be addressed as customers? So now what must we do with the leggings we bought with our money and cannot wear? We didn’t even want the money ,we wanted to exchange for something that actually fits. We are always shopping at the FIX Jabulani and the staff know us and didn’t expect such .Is there a manager at the store who can make decisions? The lady was so cold and serious, giving us attitude. This is for my sister who is a student ,in June students were busy with exams, this is the reason we didn’t go back sooner and honestly I thought they knew us at the store and wouldn’t give us problems.