Don't waste your time with the Do Not Call list because it has no authority to go after anyone outside the US - like India. If you answer the phone even once the calls will ramp up until you can no longer use your phone. Even call blocking will only work for 2-4 weeks since they spoof their numbers. The only way to lessen the number of calls is to never answer any call if you do not recognize the caller ID. Last night I got a call from this number after 8PM. No message and now it is blocked so hopefully no calls from these criminals for at least two weeks. Resist the temptation to attempt reasoning with these low life creeps and try to remember they get paid even if you curse at them so don't answer the phone.
I received this information from the company regarding this number. So the company is fully aware of this problem. Go here and read what they have to say about this issue. The link is in the lower right corner.