Airtel - unfortunately block my airtel sim

I was customer Airtel last ** years, on ** August **** , Airtel blocked my sim and all services. That contact number is my business number all my clients are linked with that number. I visited Airtel service point **-** times, every time they give new excuses like mismatch of photograph or name, According to their requirement, I provided all type of document but still my sim did not activated. They even not clear that how will my sim activate, just all the executive giving new excuses. Due to this I am facing financially loss because this is my business number and who will pay loss.