Help page for 001254256589

User ratings on Caller-Rating indicate So called Microsoft representative from Texas as possible number's owner.
If the information provided on Caller-Rating won't suffice, you may also have a look at

• the official phone directory
• forums and blogs such as tellows or whocallsme

For marketing calls, the consent of each individual is required and you have the right to withdraw that consent. In order to avoid marketing calls, you can also register your phone number at TPS. If the marketing calls still continue, you can contact the ICO. Visit Help-Answers.com for more information.

Some providers offer the possibility to block the calls of certain numbers.
There are also useful apps for your mobile phone to help identifying numbers that were deemed untrustworthy by other users such as the tellows iPhone App.

Generally, you should never provide or confirm any personal information to an unknown caller. Always question implausible claims and don't respond to threats or suspect offers and proposals.
For more information, check the Caller-Ratings Blog .