Indian Oil Corporation [IOC] — about lpg late delivery with new booking without information

Address:

Varanasi, Uttar Pradesh

Consumer i'd cx-6114122 is booked on 5.2.2020 and delivered on 16.2.2020 on complaint.
On delivery booking was changed previous cash memory of 779 rupees was showing and it's new with more than 900.
It's really disappointing to have such a trouble and paying high.
Agency is not receiving phone and delivery boy is saying your booking was cancelled and i booked with new with higher rates.
Is consumer are there to be cheated openly, it's not first time. But this time really disappointed.