i strongly said,adding channel is 100% faster than all DTH,it will take only 20 seconds.but i did only on airtel portal,til i am not called any cc for help.because there are all provision available on airtel portal,so no need for call cc.
if you want degrade your package then only need to call CC.
But i respect your feelings,every one have a different experience.but i am not support or against any DTH.i just telling you that no one service provider giving 100 % satisfied services by their contact center.