Poor customer service.

I bought shoes on the 31st July for an event on the 2nd August, the size was small. I got sick and called HO looking for a bigger size, I spoke to Anna from Rage centurion who had a pair. I explained to her that I won’t be able to personally go collect but will send someone, Shoes were collected on the 1st and paid for. On 7th August I went to return the small pair rage centurion, I had forgotten my purse at home. Was told that I’m over 7 days and returning them would be a FAVOR. I left the store with the shoes although I had the slip and they were bought on account. How is it a favor when I paid? How does it work this “favor” thing with my money? How is it over 7 days on the 7th? I’m appalled by Ruth’s (store consultant)attitude. We are not friends for favors. The consultant I called at HO today was of no help as well.