I've been purchasing Nestle Nido 1+ for the past year

I've been purchasing Nestle Nido 1+ for the past year. I've never had an issue until the last 3 tins I've purchased. This is not cheap at R350 for a 1.8kg tin of milk to only find the lids cracking. How is the milk powder going to stay fresh if it isn't closing properly due to the poor quality of the lids. I have 2 tins that have the same issue. I'm utterly disappointed and need this to be looked into