Watermelon flesh already degenerating when bought

Bought a quarter seedless watermelon late on Saturday, the container usually has ice, no ice.<br> Did not inspect closely, on cutting discovered patches in flesh where could clearly see the flesh is degenerating.<br> Definitely passed its sell by. <br> Manager had a taste said it tastes fine and would not refund me.<br> These seedless watermelons came to market late, perhaps made worse by leaving cut pieces without cold storage. <br> Also the whole ones which are also very red and close to degeneration, instead of selling at R40 on the weekend to move them, They put the price at R60 on the weekend.<br> Only on Monday morning when they still had lots of stock they drop the price to R40.