The Service Level Agreement probably refers to unpaid carers. Sounds to me as though it's a literal interpretation of the text, because I would doubt very strongly that the Service Level Agreement would be specific enough as to exclude you: it would be tempting to ask them for an explanation as to what makes you different from, say, a care worker who is paid to care for someone else and then cares for a relative at home?
Because I'm sure I couldn't...
Because I'm sure I couldn't...