My YAHOO account was hacked last week. All my contacts are GONE. My SENT messages are all GONE. My draft messages are all GONE. My account appears to be disabled. I have tried the following customer support number this morning: 0800-098-8906. I am in United Kingdom. Is that the correct phone number. The restore option didn't worked out for me. Is there any way to recover it.

Might help if you contacted YAHOO about this... we aren't Yahoo nor are we affiliated with them in any way.

You can talk with Yahoo mail supporting team and ask him to recover your email database, maybe it will work. Just fill Yahoo Mail/Messenger Restore Help Form and ask them.

I know one more associated Yahoo Support Number for UK 0800-031-4243, I'd use it for the same concern and I think it should also work for you. Don't be panic you can also go for Google.co.uk and search your all related issues. Definitely Google will help you in that respect, I am saying this due to was sailing on the same boat earlier.
Thanks,
Sam

This is Yahoo customer care number : 0843 538 8115

For what country?

@Varinder. This is an international site. What country does the 0843 number belong too?