It never rains...

Every month there is an issue. I pay for my mother's wifi in addition to my own, so I have to manually pay for hers. This month they're demanding double the amount for her account with no explanation. Their website is down so I can't go and look at her invoice. Also they were hacked and haven't notified users that their personal details have been compromised. There is no way to communicate with this company, they don't respond to emails to their support desk. Generally a horrible CX all round.