Bought 2 yogurts one with one day expiring date 2nd one was opened from the store.

I am very angry I bought two febulite 1l yogurt at pick n pay busy corner mall on the 5th apparently one yogurt expired on the following day, the other yogurt is expiring on the 26th but it was already and I've lost my slip, this is very very bad how sure I'm I that this is safe to consume? Yoooo