Paid for goods lost at the till

I bought groceries from Pick n Pay on the 1st of July, and when I got home I realized that the plastic with the meat, chicken livers and veggies was missing. I returned to the store on Friday the 3rd to ask if I had left it behind. I was told that the lady who was servicing me that day was not on shift and I would be contacted when she gets back on Monday the 6th. I was not contacted on Monday as they had promised. I then contacted them on Thursday and I was told that the plastic was put in my trolley. I asked to view the CCTV footage and I was told it was not available.<br> <br> I do not believe that the plastic was put in my trolley and if it was why did they refuse to show me the footage. I generally love shopping at Pick n Pay but this branch has really bad customer service.