Hi,I have been using airtel for the past 15 months.Since the past 2 days my speed has gone down to 10 kbps from 25 kbps.I have unlimited 725 plan which gives 128K speeds.techncally, airtel is justified to give only 128 k speed according to the plan.But, why the sudden change of heart?Is there a better plan available in MTNL? Should I switch over to MTNL?njP.S. has Airtel stopped double speeds during night for all plans or does it provide double speed during night for some plans?