I have a similar story to Sharke. It was Yahoo. As a result I got banned from the Yamaha 01v user group because it looked like I was spamming.
I didn't loose the account but I gave it a password that I can't even remember :)
Yahoo is worse than Hotmail, but like Sharke, I keep all my old Accounts and use them for certain contacts. I use Yahoo for some forums and log ons to consumer stuff like Home Depot. This keeps this junk away from my main business account too.
With Yahoo I simply read emails and delete most. I deleted the address book. I only check there once a week.
I use Hotmail the same way and it is my contact for Cakewalk. I also get all the special offers from people like Kobo books and Air Miles. There are no people in the address book. Just businesses.
So far G mail has been spam free and I like the way it syncs with my Android phone.
But this leads to why my Yahoo was hacked. Be very very careful when using a smart phone to log on to your accounts. Smart phones don't seem to block phishing. And web sites look different so we get duped easily.
I would try and get your Hotmail account sorted out. I'm pretty sure they'll try and help you, Only bummer is you'll be talking to someone in Malaysia who will take 20 minutes just to get your name right ( Just did this with Office 2010 issue)