[Resolved]  Indian Oil Gass LPG — booking LPG gas cylinder

I bal krishan kaushal residing at vishnu garden new delhi 110 018 have a LPG connection with indian oil gass our nearest distributor M/s Prajyoti Enterprises Vikas puri Keshopur Village Delhi 110 018. i am facing a problem to book my cylinder every month i am working left home early in morning & come late mostly i book my cylinder over phone. since last one year our gass agency almost change phone nos or held up phone i don't aware about this.but unable to book cylinder on time and nor our gass agency inform us about change of phone no

let me suggest how this problem could be solve asap.

best regards
kaushal