Vista - Microsoft Office activation issue

Hello, I don't know if you can help with this..

Since the logon problem, Microsoft Office has told me I need to activate it but won't let me as I have used it too many times - the thing is, I activated the day before the logon failed and it was fine so not sure why it's asking me to do it again.

Now it tells me because I have installed it too many times that I have to buy another copy!!!!!

There is no way I am giving Microsoft another penny of my money when it was a vista problem that has caused this in the first place, what can I do? I've tried the activation phone line but it's not a real person.

Any suggestions?