MTN runabout

Trying to register my new Apple iWatch. I get the following - Customer Care - You need to go to a MTN Store MTN Store - You need to contact customer care. Local MTN store - MTN does not support iWatch only Samsung.

The website https://signonsso.mtn.co.za/ does not work.

I have never had such unprofessional service that no-one can or wants to help me. This is ridiculous and so unprofessional from what is supposed to be a leading company.