You are absolutely correct - the role of a Trustee in bankruptcy is to be directly responsible to your creditors - but of course they do owe you a duty of care to deal with your estate in a respecful and dignified manner.
Why did you petition for bankruptcy, rather than looking at other options? And what assets are there in this case? You could propose an IVA at this stage even thought you are already bankrupt.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.