No service and poor comunication

My son turned 21 and i needed to complete the review process to keep him on my medical. I was told to return a form before end 2019 which i did by 22 November 2019. Then i was told to send proof of registration at varsity which i did on 6 February 2020 as that was the soonest he registered. Received a letter that they canceled his medical as a dependent this week after numerous mails regarding this. Even have mails that they say they received everything and then i get a mail they have not received anything. And so it has gone on since December. To call them is impossible as they only have automated machines that direct you to all but this problem or a physical person. I have sent them all screenshots and proof this week but no response again on the same mail they rep**** on ***. This is unacceptable in a time like this with corona.