You will be able to pay your fathers debt. Your intent of repaying him is very much rooted in deep Karma towards family and towards father as per your horoscope.
You should try to take a debt and repay the loan and losses and keep steadily paying of the loan from the bank or such institution.
As we speak you are entering a new phase of life where the debt troubles will be removed through a Job or work related matters. You need to be little patient and avoid speculation to make money quickly, it does not suit your horoscope.
Take loan and clear the issues and focus on work to clear the loan slowly through EMI's
Saturn in 2nd house along with Jupiter conjoining Rahu shows karma of debt for family and 2nd being 6th from 9th also reinforces. D-9 reflects 2nd house having Rahu.
Situation is as per karmic cycle and Jupiter dasha will alleviate problems through a loan given by someone.