Where is my OTP to log on?

I have downloaded the app, signed up with the OTP, all good. Then I got myself a nice little Android box for the TV. Since then, the whole login process is a total mess. I have tried now for 3 days to get an OTP, either via message or via call. Spent hours typing away in the helpline chat, to no avail. Uninstalled, reinstalled, restarted, everything. Re-requested via message. Requested via call. But no OTP forthcoming. No message, no call. There are easier ways to get a user to authenticate, if they paid attention to their customers. Feeling frustrated with the lack of service.