hi
i do not know for how long do u need to use antibacterial ointment, but takecare these things should be followed by doctor. anyhow i am sure that, there r restrict rules regarding antibacterial( tab,...etc).
u can try another pharmacy and take yr old ointment with u.
if u do not find then u can go to yr health center here
or (emergency but choose suitable time ( eg mid night or early morning)) and they help u.
regards