Your account was hijacked back in January, seemingly via the creation email being compromised. The hijacker looks to have set their own email in that time, which is why you aren't getting the recovery emails.
https://support.runescape.com/hc/en-gb/articles/207217595-Hijacked-account
- Recovery request
- Enter your login email
- It'll say an email has been sent. You don't have access to the email, so click "I don't have access to that email address"
- Submit an Account Recovery form
For more context for the hijacking back in January. You had submitted multiple ...
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