I noticed an account in collections on my Credit Report back in XXXX and disputed. I received an Email on XXXX stating that it was in fact an error. To date, the collection is still on my credit report and has not been removed. I disputed this with Experian and the report number they gave me was XXXX and my investigative ID was XXXX. This needs to be removed as I am building my credit and this just hampers my attempt. 
I have pasted the email I received : The results of your investigation of information in your Experian personal credit report are now available for online viewing. For your protection, please review your results online within four days of the following date : XXXX review your results, go to the following URL and enter the requested information. XXXX Report Number is : XXXXYour Investigation ID is : XXXXThank youThis notice is systematically generated. Please do not attempt to reply or send email because we can not receive it.