Many using sites to level characters and there are many them.There is one site that will stole your gold and wont give it back.
That site is http://www.wowpower-leveling.com/ i hope you wont use it and save your gold cause i used it lost 2000g.

Also know this.If you search in google you will find million of sites for power level, but in true most of them are the same.So when you talk with assistant allways ask for their offcial site cause they have many sites under same owner.

Stay away from them cause i am sure you will regret it.