K.S.
It should not be freezing that often. I had a problem with one of my apps that would result in having to shut down and restart, but all the rest of the apps worked fine. Keep a record for a week of which apps and how many times you have to shut down. Then get on the chat line with Amazon and let them know what you have tracked. It sounds excessive and if you may have a bum unit. My first Kindle Fire had a bad charging port. The cord would not stay in place and then it started getting worse such that many times it wouldn't charge or I would have to try plugging it in 6+ times before the charging light would come on. They replaced it free of charge and my new one has a much better charging port.