Helpdesk
It makes sense to offer tiered support levels, most social media has either zero support + form submission for reporting (faults, complaints etc).

We provide a level of support to all members on all plans with the following Service Level Agreement ("SLA") conditions:
STARTER PLAN - Free forever:
Community level support - within the platform.
PREMIUM PLAN
Community level support + Ticket system (level 2 priority) via support form and email.
BUSINESS PLAN
Community level support + Ticket system (level 1 priority) + Email + Scheduled calls.
PRIORITY:
Level 1 - within one working day.
Level 2 - within three working days.
Community support is available for all tier plans and can be between one minute and one month.