You don't. What you do is persuade your mum to get you phone top-up, then pay using phone top-up. She would never agree to let you have runescape membership.
No. You need to get a separate membership for FunOrb membership unless if you got the Runescape and FunOrb Membership Pack.
You can buy membership at stores like Target or at the Runescape website.
Only buy runescape membership from their site, look on homepage.
Runescape made membership cards in 2009-2010
Yes, Jagex have made Runescape membership gift cards.
The price of normal monthly Runescape membership for your country x12.
Try and looking on the purchase runescape membership page.
The longest membership card duration for RuneScape is 90 days.
To get a membership, go to the RuneScape main page, and look for the available options. There is no secret code that gives you a free membership. The RuneScape membership is a group of privileges for paying members.
On the website.
You can end RuneScape membership on the RuneScape Website, go to account management.
In RuneScape, "membership" refers to additional benefits in the game, for a monthly fee. You don't get that for free.