Why wont RuneScape let me on?
1) You could have been banned. On runescape homepage click on appeal an offence/ban 2) Your account could be locked. On runescape homepage go to recover an locked account/recover a lost password. 3) You could have been hacked. If you set recovery questions, You could recover your account VIA recover a lost password on runescape homepage 4) The runescape servers may be down, try again later.
No. No one will ever get your runescape password even if you let someone use a credit card, you only know the password to runescape. If you are talking about someone hacking you on runescape via credit card then no, because credit cards contain information about your card and not your runescape account details.