DIMTS — Drop down the passenger during the travel

I would like to inform you that I am a daily user of bus route no 794 since 5 years but now last one month they are not behave properly with passanger,
Daily they get down the passanger at Dayal sing collage and go inside the sunheripulla depot for refilling cng gas and its take half an hour In summer we all are just waiting outside and getting late bus no is DL-1PD0044, DL-1PD0070, DL-1PD1694 down Manglapuri to Nizamuddin

Why they are not fill the CNG Gas at own depot (Tahkhand Depot)

Kindly look into this matter