Still can't access my account, and broadband down

For literally years now I have been trying to get access to my online account, but I am forever blocked by different technical problems and there seems to be literally zero support accessible.  I have been unable to activate my account since day one as the "verify your email" links that came through were immediately "expired".  I would literally receive the email and click it within a minute yet alway the same -- expired.  Over the last 18 months or so I phoned multiple times about this but got nowhere.  I texted via Whatsapp but received literally no reply at all.  I gave in in the end.

Now today my broadband is down again and I was advised to download their new app so I could check status and report it.   I tried to log in and it doesn't recognise my account number, so I can't.  Same thing via web browser.  

I phoned support again and spent literally 10 minutes navigating their infuriating automated menu system until eventually it said it would transfer me to a human being.    I then heard a series of muffled sounds and and occasional split second of human voice for about 20 seconds until I was disconnected.

What am I supposed to do?  The service doesn't work.  I can't log into any of the "apps" that are supposed to help me manage these situation.  Nobody answers the phones or if they do they just hang up, or the line doesn't work or something.   Nobody answers Whatsapp messages.    What am I supposed to do to sort this mess out?