Email account theft is rampant. If it happens to you, there are several steps you need to take, not only to recover your account, but to prevent it from being easily hacked again.
There is no Hotmail support number. If you find one in search results, it’s not Microsoft. Whether it’s legitimate is up for debate.
Getting spam from yourself? We all do. I’ll look at why it happens; what, if anything, you can do about it; and something unlikely but important to check.
Unfortunately most of this is out of your hands now. There are a few things you can check for, and then you’ll have to just get on with your life.
If you believe you’ve been hacked, you will want to protect and preserve your data right away. First, make sure exactly what has been hacked.