We don't pay, we get into trouble. We pay but we're STILL in trouble - TransUnion NIGHTMARE!!!

I have an open dispute with TransUnion since 05/09/18: I received an SMS on 11/09/18 stating that my documents have all been received therefore, calculating from the day this SMS was received, 21 working days lapsed as of 10/10/18. When I checked my credit report on 09/10/18 the issue seemed to have been resolved as my credit score, which was not showing before, was showing however 3 days later (12/10/18) when I checked my report AGAIN for an unrelated reason, my credit score had been removed. I have called 3 times in an effort to find out why my dispute is yet to be resolved and ON 2 of the 3 occasions (12/10/18 and 17/10/18) I was told that it will be escalated and the turnaround time is 48 hours however when I checked this morning there is still no resolution. I called again this morning (22/10/18) and am awaiting feedback.