Hindustan Petroleum Corporation [HPCL] — Gas connection check

Address:

A 901 nagarjuna premier apts 15th cross jpnagar phase 6 bangalore 560078

A person deputed from the HP gas supplier, manjunatha enterprises jp nagar bangalore conducted safety check of the gas connection on 21st jan and collected Rs.236 as charges.
My query is why in the first place HP has to conduct this check on payment and cannot do the same for free.
The person deputed practically did nothing except inspect the cylinder and stove and declare that everything is in order.the whole exercise took only 5 mins to finish the check and the writing of the bill for Rs.236 took a longer time. Is this authorised by hp and if so what purpose is served.there is already a provision to call the hp authorised person for any emergency.