Vodafone India — in & out calls, messages not received promptly

Address:	Thane, Maharashtra, 421201
Website:	Vodafon.in

Dear sir / madam,
I am regular customer of vodafon prepaid number. From last one i can't received calls, messages from vodafon properly & promptly. Any time they had send messages. E. G.- when someone send me message at the time of 6pm in evening i received messages @ 12am or even 1am early morning. When some try to call me on my number message shown "connection error" & number not reachable.
Its a kind request to fix this problem.
Thank you.