Very worse and unbearable. Review on Tata Docomo Mobile Operator

I am going to share my opinion on the operator tata docomo. I don't know the coverage of all areas but particularliy in my region I have never realised worse operator like docomo. There is no any network coverage when I will remain inside home that means that even your mobile phone is switched on your loving ones if try to contact you they will recieve the message that the mob is switched off as it happened lot of times with me till I used this. Not only in home but outside also very hardly I get 1-2 bars which creates a lots of problem. I have complained to customer care but totally spoil no improvement seen after 1 month. Also you have to struggle very hard to contact with customer care. At last I ported my no when I saw no improvement. I personally recommend people not to buy sim card of this operator as they provide very worse service 24 hours. They attract people buy giving exciting offers but they are of no use as network is fully worse.