Bad service from Transunion

I have an active account with TU. I am very disapointed with the inability of the TU support team to resolve my issue. My Credit score was reduced without any negative activity on my side. I called in numerous times. Firstly I was told that the issue was escalated. I waited for more than a week, no response. I called in again and still they cold not see why my score was reduced. The last time I phoned I was told the score dropped because of an increase in repo rate/ interest rate and it will be back to normal at the end of January. To date I am still siting with the same issue, my score is still incorrect. Can