Incorrect Blacklisting ITC

I called around 8 July to block my phone and received ITC number. I provided this ITC to my insurance, but they told me the ITC number I provided was blocked in 2019. I bought the phone in May 2018 and have never blocked nor claimed for this phone. Insurance will not pay out until I provide a new ITC number. Can this be resolved ASAP, I did not block this IMEI. It's infuriating trying to contact your agents as I get transferred to contracts and then get told they don't have TransUnion credentials and then I get asked to call back. I have called 8 times today and on 2 occasions it cut out after agent answered.