Mailbox quota full

Thank you Brian. After spending hours on chat, on hold, and talking to multiple reps, including tier 2, not one person figured this out. They even told me they were sending in a ticket. I actually figured this out on my own earlier today, because that was the only thing I could think of. I went from 300 to 100 to save just a few dollars, as my bill has gone up over $50 in three months, and I'm trying to save a little money until I can sign up for anther service, and we have four email addresses that all have to be converted and many email contacts need to be upgraded as we've had cox for 27 years but they still wont work with us on our bill. The worst part, since I changed, is I can't get any emails, because storage is full. I've been deleting emails for 14 hours straight today and still can't get the storage below the 2gb. So my email account at this point is useless. The NEVER told me I would not be able to get emails, never mentioned the storage change. In fact, I've found over the past few months, they've lied to me about multiple things.

I have spent the day all day today continuing to delete emails. I did figure out the filter thing, and have been working my way through that way. The thing is, the server is SO SLOW it takes so long to first, delete in large groups, then empty the trash. It is not a quick process. I have no idea how to set up an Outlook account, I am unable to do the second option as yes I have some bundled services I don't think I would be eligible to do that.

Also, a related question, if I set up an outlook account and then cancel cox, will I lose all of my emails? One agent said I have access for 60 days but another agent said my emails would disappear immediately. No one seems to know the answer.