Vodafone India — outgoing messages are blocked

Address:

Chennai, Tamil Nadu, 600079

From past few days my outgoing sms are blocked. When contacted customer care they are saying that i might have sent bulk messages but i never did so. Please help me in resolving this issue asap as i am associated with this number from long time. My email [protected]@gmail.com.
Customer care executive were asking me to register a complaint with trai but they were unable to provide detailed steps to register that complaint. I feel as a service provider it's vodafone's responsibility to resolve this issue instead of asking the customer to do so.