Surah Al-Mulk [Ali-’Imran: 26-27] should be recited for those who wish to repay their debts. One should recite this ayat and then supplicate to Allah (S.w.T.) that he wishes to repay his debts and seeks help for doing so.
For the same purpose, the last two verses of Surah al-Baqarah should also be recited after every ‘Isha prayer.
The recitation of Ayatul-Kursi after every prayer and reciting Surah al-Waqiah each day (41 times in total) are other means of getting divine assistance in the repaying of debts.
Lastly, Surah Talaq (Ayat 3).
p/s: Found this n thought it may benefit U. :) InshaAllaah.