Forward your complaint vai registered post ( keep one copy with you ) to the CMD/MD/Manager of Mahanagar Gas at the below mentioned address:
(Registered & Corporate Office)
MGL - House
Block G- 33,
Bandra Kurla Complex,
Mumbai - 400 051
Tel : 66785000
Fax: : 26540092
Vsiti: http://www.consumercourt.in/address/...complaint.html for complaint reference.
Hope this may solve your problem.