Need to escalate issue of poor service and admin. Extremely frustrated now.

This is in response to my previous issue. Still not resolved. The same issue which was already resolved keeps getting re-resolved. How is that even possible? The issue at hand I was informed is resolved. But I check, I find it's still there. I am contacted by Transunion, advised it had been resolved. I log on or receive updated report only to find the issue is STILL there! This is hurting my credit report so badly.

I nere to escalate but please can somebody advise how????