One explanation that you may encounter unlock Yahoo account frustration is a result of issue in the record recovery steps. If such a situation rises, by then it'll be sensible for you to use the tech help that is available in the specialized help regions or you can call the customer administration to get a couple of techniques to deal with the issue.

Yahoo Customer Service| Call +1-888-584-5373 24/7 Anytime

You should approach Yahoo Customer Support engineers, right at the moment you face any technical trouble while on Yahoo.