Forgot password

Hello, please help! I have a new phone number, and cannot get into my yahoo mail. I follow ALL instructions to recover it. It asks for my phone number, I put it in, and it says it is sending or texting me an "account key" so I can verify and get in. I have been trying this for over 2 weeks. It doesn't sent the key. I don't know what to do. It doesn't ask for security questions. It checks to make sure I'm not a robot...it does the same thing over, & over...is there customer service I can call??? VERY FRUSTRATING!?!? I WOULD GRATELY APPRECIATE FEEDBACK...THANKS. my alternate email is ***@***