Bharat Sanchar Nigam [BSNL] — Worst network and literally no Internet connectivity..

Network is worst and literally there is no Internet connectivity at all in the city like ( Mumbai ) since from the day i took this bsnl GSM mobile connection.. I'm not able to make calls nor even able access the Internet and the worst part is your customer care executive are very rude and arrogant they never resolve any issue of any customer no matter how many times you complained, There is no response on twitter or email.. I understand bsnl is going through a very bad time but unless you won't resolve customer's basic network and Internet issues you won't be able survive.. If you really want to..? It is totally unacceptable that there is no network in the city like ( Mumbai ) At my residence all other operators eg. Vodafone idea, Airtel, jio.. their network is always high and Internet speed is also excellent.. But what is wrong with bsnl then.. I'm providing a Docket no. 4H[protected]. Resolve my issue as sooner as quickly..