If your PIA was not accepted then I see no reason why your bankruptcy application could be refused. I understand your desire to reach the ultimate finality, you'll get there, don't worry.
One of the conditions is that you must have tried a PIA or DSA. The judge will need a letter from a PIP stating this. All the other documentation is different. While painstaking, and requires quite alot of editing the documents, it is very possible to do the documents yourself.
Give the IMHO a shout if you need help. If your PIP is messing you about then contact the ISI for advice.