mouldy more than once , very dissapointed

I have bought montego "monty & me" 25kg food for my 4 babies. numerous accounts I had to return to the store where I bought the dog food as it was moulded. This is my time, petrol and money wasted. this is the third bag I bought at pet zone columbine and once again a waste. I think it would be fait to refund , I will now give my babies other food that is NOT mouldy and rotten, my dogs started vomiting and that's of 2 bowls, the top of the third bag was not moulded , but as the first layer goes, its just mould after mould. I have photos and will take this further. I am very disappointed in montego.