Hong Heng Aircon Service

Overhaul 1 Aircon unit and wash 1 aircon unit early feb 2016 and after 2 weeks the ac leaks. The service man came to check but unable to find out the cause of the leakage. The leak still persist and intermittent the air con still leaks. Although aircon is old but i didnt know after servicing the leaks gets worst... Was told that my ac motor is very old. (8 yrs ) n advised to change my whole aircon system. ..