Cox has lost my email history

My email account was deactivated because i do not log on to the website, instead I use outlook 2016. It was reactivated on Friday and I was told it would take up to 24 hours to have everything back in place . My folders are there, however none of my previous emails are there, many of them were very important (legal, warranty, etc.). The only, I am getting from Cox is ,"We're looking into it the matter, and we're sorry".

Thanks for looking into it , and any help you can give.