Discovery app and website down, I get penalised.

I am super annoyed with Discovery vitality, they decreased my healthy food benefit cash back reward by a substantial amount, I have not been able to complete the vitality assessment as every time I go online (computer and app) to complete it, it is down, shows the following error:

500 Error Sorry, but an error has occurred. Our technical team is probably already hard at work trying to fix this problem, so please try again later.

I should NOT be penalised by getting less cash back because of a Discovery technical issue. I phoned this morning to query it, the lady was of NO HELP and transferred me to another department who doesnt answer their phone. Why do I pay vitality if I am not going to get the full benefit? and why should someone be penalised with less cash back when the issue is on Discovery's side?? The email I am giving is the only one I could find on their site as there seems to be no email address for queries, and I just refuse to sit on hold wasting my airtime any longer; nor speak to a chatbot which won't help me at all. I pay a lot of money to Discovery every month.