Not putting the customer first really

I bought Thrive porrige at Checkers with a few other things. I was in a hurry that day and had to rush from the shop back to work. When I got home i realised the porrige was not packed in with the other goods. I tried to phone the number on the slip but nobody picked up. I tried again the next morning, but nothing. I drove all the way back to checkers to inform them between what time i bought this and which till. The person who assisted me was friendly, but only asked a few people if anyting was left and then went into a book . He then told me "sorry" nothing was left here. Not worried about the fact that I paid R30 for stuff i didnt have. It was my problem suddenly. Really??? The fact that they did'nt bother to offer me another packed seeing that I have the slip with the porridge reflecting? of try at least to make this situation better. Seeing that i have no porridge now. VERY DISSAPOINTED IN THE WAY THEY HANDLED THIS NOW.