BITCOIN WITHDRAWAL

Hi I’m extremely new to Crypto !! I have a friend who has a massive amount of bitcoin invested in a very well known trading company in the US. He has been trying to withdraw the bitcoin from a cusodial wallet via this company to his personal non custodial wallet so he can cash out . He has spent 3.5 yrs trying and spent $149k USD to this company . I am invested as I have provided funds for the withdrawal. Every day is more fees – network, gas fees , IMF , SOF etc . Is this normal ? They ask for fees and give an unreasonable timeframe like 70mins to come up with the fees or our network fees go up etc there is always an excuse and a fee attached . Some advice what we can do is greatly appreciated