Frustrated!!! No response on emails or calls

I have been trying to get hold of this bureau for the last week. They don't respond on emails and when you call you hold on for more than 20mins and still no answer. I have logged a dispute on the 24th of January but yet I have not received any feedback. The same dispute has been resolved with TransUnion but I am still waiting on Experian. WHY am I not getting feedback for something this simple. I have sent multiple email with proof as well as the settled dispute with Transunion but still no response.