Deliberate Incorrect Reporting

I was placed under debt review in 2017. The debt review company changed their contact details and received no responses to emails. I was subsequently sequestrated in 2019.I have requested Experian to remove the debt review flag as I'm no longer under debt review ,several times now. I'm always given the same feedback that I need to contact my debt counsellor as they need to updated the NCR database. The debt counsellor no longer offers the debt review service as they closed down ,now I'm stuck with an a flag that is null and void. There is one debt on my credit report, so what debt am I still under debt review for? Sequestration order supersedes the debt review order yet Experian are refusing to remove it. Transunion has removed the debt review flag as it is no longer applicable. I have called Experian a multiple times. I am made to hold a dead quite line for over 30 minutes until I end calls each time. For all I know they are ignoring calls. Now I am stuck with this flag that is invalid on my report. The debt counselor could be dead and I am expected to resurrect them to remove the flag, while they have a valid court order stating my current status, which I send to them with every dispute I have logged with them.