Refused to help with one parcel

I placed an order online before Easter which I usually collect at Uzzi store randfontein.. I never received any sms from them to collect my order, I personally tracked my order on saw that it was ready for collection and I went to collect it….they never explained to me that I still have an outstanding order when I get home it’s only then that I realised that one parcel is missing…due to my frustration I requested my little sister with the same surname as me to get my package and the refused to help her…I stay at Westonaria and we don’t have any store around this area hence I prefer Uzzi randfontein…. I ordered already it’s not like she’s going to buy on my behalf….😡😡