Complaint against Al Ghurair Giga DHA Phase 2 Islamabad

Alghurair giga is very pathetic developer. Seems never fulfilling its promise of possession of its residential apartments like defence tower 1. Man on telephone is saying within 6 months since last 2 years. Is there any forum in pakistan to lodge complaint against this culprit???

Can we submit complaint to DHA for poor approach of Al ghurairgiga Dha phase 2 or not?