disguted with the service

i logged a dispute on the 5 march 2015 and send my documents on the 6th march 2015 .. i have been in contact with the disputes department to get feedback on my dispute and spoke to Yolanda @ transunion 3 times she informed me that nothing has been done she will escalate the matter I should call back ,still nothing was done so I then asked to speak to a team leader Katlego he informed me that transunion recieved my documents on the 8th of march however no investigation was done he promised that the dispute flag will be off by the 8th of april since it was not my fault ..... its more than a month that the bureau has my documents and they only loaded the dispute on the 30th march 2015 ..... i am tired of calling transunion because im getting no assistance at all I will take this matter to the NCR because a dispute is suppose to be resolved in 20 business days