My bad days at pick n pay Cosmo city

I'm not happy at all with the service I'm hetti g from pick n pay Cosmo city. I do my every month grocery there even pay my easypay acc there. Last month I had to take back tuna and lilets that I bought because the prizes in shelves where different with the ones on the slip. I live 13 km away from the mall, so I wasted my petrol for no reason. Last week 26/03/2019 i went to go do groceries and withdrew and payed my account, as i get home I checked my slip. This timeI payed for a nivea deodorant R58.99 which says x2, while I bought 1 spray which was R39.99. So what I don't understand is that why should I waste my petrol every month because of discrepancies that are happening in that shop. I'm really annoyed and really feel like there's no professionalism in that shop. I'm really losing my patience because now I only have a slip to prove this.