Inconsistent feedback of dispute lodged

I have lodged disputes with Transunion for updating of my credit record. <br> <br> At 13:10 they advised that the dispute letters were sent to the legal department of both service providers. I then called one of the service providers, spent 30 minutes on the phone with their legal department with them trying to access the letter that was supposedly sent. They couldn't. They then asked if transunion could specify which email address or fax was used. <br> <br> I then called again at 14:06 requesting this and they advised that they could not. I then asked for a name or a specific department that they sent the dispute letters to so the service providers could find them and respond accordingly. <br> <br> I have been on the phone for 38 minutes. During this time the agent has put me on hold to refer and confirm with his supervisor, Shanaz Mkomo, on facts. The story now has changed to accounts department instead of legal department - and even then they cannot provide specifics because I raised the fact that each service provider has different departments that handle accounts and none of them go by ''accounts department''. The supervisor has refused to speak to me directly saying that she is too busy.