Premature repatriation to parent organization

Sir I come on deputation for three years extendable to two more years, total 05 years. I completed three years in March 2024 and got extension from borrowing organization for 02 more years. The borrowing organization got cadre clearance from my parent organization before extension as required. However, my parent department has not approved my extension given by borrowing organization yet. Now I got selected on a tenure based selection post in parent organization in same pay level but with higher duties and responsibilities. Parent department asked Vigilance Clearance Certificate from borrowing organization for services of my deputation period. Borrowing organization denied saying that, I have been given extension of 02 years, which to be completed. Without completion of extension period borrowing department will not be able to relieve me from the deputation post, they also told to my parent organization. I would like to join the new assignment and waiting for appointment order which will be released by my parent department after having the Vigilance clearance certificate from borrowing organization. Both the organizations are central government organizations/ ministries. Forty days already passed after the first communication from parent organization to borrowing organization. Please suggest the course of action.