onefellswoop's dashboard

I'm in India. I can post onto Twitter by sending an SMS to 5566511, and that part works fine. However, immediately after I send the sms, I get a reply from 55665 (not 5566511, please note) saying "This service is not enabled yet".

It gets really irritating because it happens every time I post, and its putting me off using Twitter from my phone, which is a shame because I think its most fun through the phone.

Could you please look into this? My service provider is Vodafone, if that helps. Thanks.