Tata Docomo — network failure

Address:

Chennai, Tamil Nadu

my tatadocomo is not working for more than a week.... i submitted my complaint to them but they are telling "within two days we will clear your problem" but till now its not working... i lost many lakhs due to this.... i cant even give PORT because of this problem... i can't even change my network... how will others contact me if this happen so....... so kindly take action for this... thank you