Mahanagar Gas — Connection not done after 4 months of receiving the money

Address:	400701
Website:	www.mahanagargas.com

Paid connection charges on 19nov2015 wherein they failed to give the connection even after 118 days of payment
If they cannot give connection on time why they are charging money in well advance
When i spoke to customer care they keep on saying will arrange a callback from concerned department where i did not received a single call from them