Reliance Communications — messages take hours (1-2 days sometimes) to reach the destination

I am a reliance pre-paid user.. i have resently activated the sms pack in my mobile this month... and i was shocked to see that by the 3rd day the messages were reaching after a day... i tried seeing for 1-2 days but from the past 7 days the same thing is continuing. i keep sending the same message more than 4 times then its going otherwise it goes the next day after 24 hours...messages only to vodafone and tata indicom are reaching immedialtely...and its taking hours sometimes and days for idea and the same is the case with airtel also... i get the messages mostly but sometimes i don't get it from airtel numbers...since maximum of my use is towards idea and airtel this is causing a lot of inconvinience.. so kindly look into this matter please..

I would be greatfull if my problem is considered and it is solved as early as possible... because we are promised so many facilities we are asking for them...please look into this matter and reduce the problems caused by the network...