[Resolved]  Hp Gas — how much time it will take after booking

Dear sir,
I am from hyderabad and am a HP gas customer i want to know that as if i am receiving a cylinder on 19th april 2008 then after how many days i can booked the other cylender is there any circular for that because by dealer is telling that you cannot book the cylender again after 10 days i should complete 30 days after the date of delivery then only we can book and after that also they are taking 10 days for delivery
i request you to please helpp me out for thisand plz send a circular copyof that