Can’t Login to my Blog, email address on record is deleted

My computer crashed. Had a Virus, took it in for service. When I got it back I could not login to my blog. I have been using this same domain for over 3 years. I had a lot invested in it. I tried to enter my old password it didn’t work. I tried to get my password but then I remembered that the email address I used had been deleted from my computer. So how do I access my account to update my email address? How do I login?
I have registered under another name but that doesn’t allow me to access my account. I have tried emailing this guy Matt and WordPress. I just paid for another year on my domain and I would hate to have lost everything because of a stupid glitch like this. So what do I do. I am not a computer person, I write content so don’t expect me to understand code. Any suggesions? I can’t believe there isn’t a customer service number to call and get this straightened out.