Location/place: new delhi

Name of company/service: mts

i have very bad experience with mts this company is cheating customer only very slow speed and customer cere ar very stupid type of people r working they hold ur call for 10 mit .what is service its very bad
i hv chandged my plan and they hw generated 1251 bill within 4 day hw it happen i don,t know i newer download data only i used facebook and u tube.