My son lives in Dubai , he have collateral...

My son lives in Dubai , he have collateral management agreement with bank in Africa. Bank has failed to pay the amounts on due date as per agreement. Now we are into litigation and as per contract if the bank fails to meet the dead lines for payment then as per agreement , it has to be paid up with fee/service charges. He waited 8 years for the bank to pay and negotiations were on. Since the matter is now in court the amount will come with service charges on the final judgement ( so I can collect/take the service charges amount after 8 years of suffering and agreed at the time of supplying goods) food commodities. Am a Muslim and my partner is Hindu . In our firm Is permissible to take my service charges?