Tata Docomo — need to reactivate sim card

Address:

Bilaspur, Chhattisgarh

Hello sir/ madam,

My name is vikas chandani, i had an old docomo sim card with the number [protected]. Since docomo is now merged with airtel and the office does not open frequently, the people are unable to provide me with a solution. My sim is out of service since more than an year and i want to access all my linked payment gateways through it, which is now impossible without it. Please help me out.