If you are not able to set up the Yahoo Account then first try to set up it on your own by reading official Yahoo short blogs and if after that you are not able to set the account then just contact at Yahoo Phone Number i.e. 1-855-436-1666. You can call at the given number at any time as we are all the time accessible to provide valuable customer care service. contactcustomer-service.net/yahoo-help-number/