Credit Score Management

I am looking for a company that i can trust to repair my credit does anyone know about this particular company. Or can someone refer me to a company that’s not going to rip me off.

http://www.expert-credit-advice.com/free…
I have a question about letter # 3 “Request to delete inaccurate information.
If an item is inaccurate, do you have to give a reason why?
Or can you just say it’s inaccurate?
The credit bureaus have to tell you why it is accurate right?