Kasamba is not a free service. All advisors on Kasamba are independent contractors and set their own fees.
If this is your first time speaking to your chosen advisor, you will receive 3 free minutes in the beginning of your session. At the end of your free minutes, the session will automatically go into 'Hire' mode which means that you will pay for the rest of the session. You are given the option to quit the session, at any time, at your own free will.
If your advisor is offline and you'd like to conduct an Email session, you can send them an inquiry at no charge. Note that the cost for actual email sessions is set individually by each advisor, and is often subject to negotiation.