Incase you are having an unresolved issues with your Network provider, NCC has provided means to report to them toll free and get help faster and better but before you do so make sure you have reached out to your network provider and they did not provide solution to your genuine complaints.
To reach NCC, use the following contact details:
1) NCC Toll Free Number is 622
2) Reach them via Social media like Twitter and Facebook
Hope the above info help and you can also comment on this blog so we can help reach out to the network providers.