There are various ways of receiving help from support team of yahoo when you are in trouble. Like you can avail the online chat service with the support team member, you can send them email on the email ID of Yahoo customer service and you can also fax them your query in the fax number. But, if you need the easy solution in minimum time possible then Yahoo 24x7 customer support number is the only way you can receive help. The number is available 24*7 and from any location. You can call them via landline or mobile phone and other devices as well.