Dispute TU***

I logged a dispute with Transunion on 01/09/2023 reference number TU***, Blue Oceans didn't acknowledge the dispute. I contacted Transunion and they said they awaiting feedback from Blue Oceans, followed up with Blue Oceans and they said they hadn't received anything. Logged another dispute in the hopes that they will action this one reference number TU***, when I called Blue Ocean the lady I was dealing with now is busy and can't take my call, sent an email and it has not been acknowledged. Please assist as I need this default removed.