I CAN'T GET THE HELP I NEED

I went to PEP at the Clearwater Mall to buy a phone for my father. I was traveling to Zimbabwe the following day and l specifically shared that information with the till operator and the person who brought the phone to me. I told them that the phone will be used in Zimbabwe. To my surprise, when we opened the phone to put my father's sim card, it got rejected. Apparently, the phone is blocked from taking other SIMs which are not Vodacom. I travelled back with the phone and went to the store to get it changed. However, l was told about the seven days rule for making exchanges (travelled back when 7days had elapsed). When l explained this, l was told l should have read the terms on my slip. The same slip l left here before traveling, not hoping to ever use it again. How could l call the shop? I was told to take the phone and give mine to my father otherwise find a buyer. I mean really, even after willing to show you my traveling dates explaining that there was no way l could have brought back the phone within 7days. All l wanted was to get my father a phone but it is here, still boxed with a till slip. And he can't use it. We can do better as humans.