Unable to watch

I signed up yesterday for Showmax via DSTV and I took the R99 option where I can watch on 5 devices, but I can’t even watch it on my phone, I get an error to ipgrade my subscription in order to watch, I then select the upgrade option and it shows me again the same option I took I select it again but it still gives me the same error “upgrade subscription to watch”….another thing is that it is said it comes with a 14 day trial but I see on my app there’s already a charge for that and shows as due on the 2nd Jan…..how when I’ve only been one day in??