Tata Docomo — network problem

Address:

Ranchi, Jharkhand, 834004

My number is registered in ranchi, jharkhand on tata docomo network. From more than 8 to 10 months, roaming signal is shown in my mobile phone network, despite of me being in ranchi. Whenever i talked to any of customer care representative of tata docomo, they always told me that network is being upgraded and roaming sign will be removed. But till now i. E. 19.06.2018, roaming sign is showing on tata docomo network. Due to this roaming signal i am unable to send text messages. Also, tata docomo network functioning is very poor. My mobile phone network goes very frequently, at least 10-15 times a day.