ISLAMABAD - OGRA Friday finally announced to take action against CNG stations that were charging price more than the notified rates of CNG. According to officials, over 50 CNG stations were found overcharging during the surprise visits. The operation was conducted in the supervision of Member (Gas) Aamir Naseem. It was reported in media that many CNG stations were overcharging in the twin cities on last Monday. CNG Association has assured OGRA that no CNG station would overcharge in future.