Would you throw the milk out?

Okay so started building a stash months ago. I received some NUK bags and had never froze my milk before so I didn't know any better. But, the tamper evident seal around the top of the bag had been torn off each bag. These were purchased at a discount store. I've bought many things from them. The products are at a huge discount typically bc of minor flaws in the packaging or misprints on labels. Like I said I had no clue it was even a thing until I went out and bought more bags. When I went to store the milk each time the bags were completely flat and didn't not look used or messed with. So my question is: would you keep that milk? Is it safe for baby to drink? I mean we are talking at least 100 ounces saved this way. Sorry FTM.