Reliance Net Connect — irresponsible customer care

dr sir/ madam,

i am getting calls from reliance net connect customer care exec twice or thrice every wk for about 3 months. the prob is i am getting calls for some wrong person and i have already informed the rel cc exec that this num does not belong to them. they are asking me to pay the bill for postpaid net connection. i do not own any of the rel postpaid connections and they are asking in the name of " RAMASUBRAMANIAN".
i am really frustrated that i have informed several times the cc exec that this is not his num and u r calling someone wrong. even yest i got one cal from rel cc and she spoke in ill mannered way.
i have complained several times and still no proper response. i have tweeted them also and msgd in fb form in their site. if this continues really i wil take necessary actions.
if they cannot provide gud customer support why do they need to run the company? irresponsible people.