Tata Indicom — unacceptable language of customer care executive

Address:

New Delhi, Delhi, 110085

I have ported my number but still i m getting calls from executive. I have cleared all my dues in in june as i ported during dat month. But still i m getting 10-15 calls everyday wether its morning, afternoon or night anytime. I m continuously asking them for details but no response. Kind of language ur executives (Dat girls) are using is not at all acceptable. Worst then illiterate. Every time she threatening me to stop my number. Who d hell dry are to talk to me like dis.
I m sorry to say tata has worst network ever faced. Customer care not at all co-operative. They never attend d call. I had issues regarding data connection, tried to call customer service so many times but no response.
Kindly ask ur people not to call me as i hv nothing to do with tata. Plz change dat cheap, illiterate executive staff.