Vodafone India — can't send port message

I can't send the port message to 1900. I want to port my vodafone number to another network as my vodafone network has been worst and vodafone is not doing anything about it since the past month. I have sent so many emails, but all i get is automated replies. I have network issue all over the city and they say they are not currently not updating network in my area! I have received the worst customer service ever!! So i'd like to port asap but i can't send the port message on 1900. I says sending failed as soon as i press the send button. I don't understand why that is happening. Vodafone honestly has highly degraded their services!