What is wrong with snapchat?

I literally have to block people from quick add because it keeps suggesting people. I have a new number so it's not linked and my email is random. It's scaring me that it's not only suggesting old coworkers but someone who threatened before. No matter how many times I block more people keep showing up. I have quick add off and tried deleting contacts so many times. It's not fair I have to live in fear because Snapchat is so careless. This app has literally cause me to almost lose my life several times. I'm surprised there's no lawsuit.

What is wrong with snapchat?
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