Empty promises that costed money

On Friday 22nd December 2017 I went to speed trainer n1 city mall to look for a pair of Chuck Taylor's for my daughter. The store never had her size and said they'll order a pair for her and it would definitely be at the store Sunday 24th December 2017. I asked the shop assistants multiple times if they are sure the shoe would arrive due to it being a long weekend and Sunday was only 2 days away and each time they assured me. I went to purchase myself a pair of Chuck Taylor's s too based on the fact that my daughter would be getting her pair because we have matching outfits for Christmas. Since Friday I haven't looked for a take for my daughter based on the fact that we'd be getting hers today and we made a payment. Today we went all the way back to the store to collect the shoes (and I do not live close to the mall at all) and we were told that they're not sure when the shoes will arrive, it won't be there today and no other store have a pair in her size. I now have no shoes for my daughter because of your ****py service, and I have spent an additional R700 purchasing shoes that I wouldn't have bought if I knew my daughter wouldn't be getting the same pair. Really guys? A DAY BEFORE CHRISTMAS??? WHAT AM I LEFT TO DO??? ABSOLUTELY PATHETIC!!!!!!!!!!!!!!!