Tata Docomo — network issue

Address:

Mumbai City, Maharashtra, 400022

I am having 2 tata docomo numbers one prepaid and one post paid no issue was there since 18 months but after merger with airtel there is zero network at home since 14th of this month. I have raised several complaint with docomo but every time it is closed without resolution. I need help. The call center people are very arrogant. I m a doctor no one can contact me when i m at home as it's total zero network. We don't have airtel network but we were having tata docomo network earlier. Please help me