Need urgent help with cox e-mail account recovery

Hi, all. My Dad called me yesterday because he couldn't access his gmail. I went over there today to find that somehow his gmail password has been changed. He could have been hacked or he could have changed it on accident and forgot(he has mild dementia). His phone number is no longer associated with the gmail account, but his cox email is. Unfortunately, it appears cox deleted his email account a few years ago when we moved his service to an assisted living facility and then later back home. We never asked them to but they closed his account and opened a new one after 20+ years with cox. We have sent google a message but as far as they are concerned the account is working fine and don't appear to offer any further assistance other than to use the automated recovery options. The only recovery option for his gmail is by using his deleted cox email account, and he is literally in tears over losing all his pictures and contacts. We tried reaching out to Cox and chatted with "Dan" who said that there is no option to recover email accounts, but there must be someone who administers the database for their webmail- is there anyone from Cox that we could please reach out to? We can easily show that he is the account owner and user of the deleted email account. My father has been a cox customer since the 90's and we would be so grateful if we could find someone able to help us. Thanks -Bryan