I'm so annoyed!!!

I am disappointed by the service at PNP jubilee mall, the store doesn't have enough trolleys or baskets and customers are forced to carry products with their hands and this makes shopping unpleasant. I brought plain yogurts (6s *2 PNP brand) in December and found out that the other pack had expired yet it was selling in the fridge. On Wednesday I bought 6s plain yogurt PNP brand I had two of those n this morning I found one with a soury taste yet it expires on the 6/04/19 and this saddens me because I'm pregnant, I even asked my partner to taste it thinking maybe it's my taste buds but he agreed that the yogurt tastes sour.