Count yourself lucky that I was online this evening ! I partly erased your phone number and email address.
You published your phone and address on the web for millions of people to see. In doing so you left yourself open to hacking and harassment.
There is nothing you can do if you created the account on the mobile device or number you no longer have access to.
Always create accounts on a PC or Laptop (landline IP), and then attach a recovery email to it. That way, you can have multiple ways to recover the account!
Furthermore if you have not accessed your Yahoo account for 12 months it is automatically deleted from the server.
Please be careful on the web, there is always all kinds of prowlers looking out for information like you published.
Note that we are CCM, a high-tech forum and we have no business with Yahoo. However we have experience.