Tata Docomo — I am not able to reactivate my docomo sim

Address:

Dr no 2/37, Ganaoathi street, madikeri, Kodagu, Karnataka, 571201

I am using docomo sim with mobile number [protected] as i was in foreign i was not able use your network. But now i am in india my bank and all documents are linked to my this docomo number. My sim is deactivated on 21st may 2019. Now when i call your customer care i am not able to reactivate my sim please help me to reactivate my sim. As i contacted customer care they said we are not able to reactivate your sim. But they don't gave an single reason why. We customer's are always suffering from this big company's. I want to tell all that this training rule is really not benifiting any customer. It is only benifiting the company.