Rotten eggs

I purchased a tray of 30 eggs on 1/14/2023 , from checkers brakenhurst alberton.

My daughters made us breakfast on Saturday morning and we found it weird the cooked eggs had a black color to it.

Upon this I assumed it was burnt and ignored this.

On Monday morning I started cracking eggs again to make breakfast to to see the yellow is sticking inside the shell.

I had a look and it has a black like mucus , i had cracked three more and found the same thing, Eventually the fourth egg appeared to be ok.

I then ignored this thinking you know what this happens with eggs.

But this morning once again another 4 eggs cracked and have this black substance in it appearing they are off.

I could understand 1 or 2 eggs doing this in a tray but im Failry sure im on 10 -15 off eggs in a tray rendering me not getting my value for money.

I feel this should be looked into as this is poor service provided by a large name brand.

We had bought two trays of eggs but my family are completely put off from this.

Will await for your response on how these eggs made it paste quality checks , resulting in me spending my money and being served to my kids in this state.