Free customer care is a myth. It's actually really expensive to have call centre staff waiting around for calls. Most mobile users don't need to use call centres, yet indirectly still pay for them through high call rates. The Revolution is a 'user pays' service. If you don't need to call Customer Care then you won't be paying for it.
Need an answer straight away? The first place you should look is right here on Revolution Web Help. There are a number of other options for customer information, so check these out below and choose what suits you best.