Pune Municipal Corporation — Illegal GST charges over and above parking fee for two wheeler parking

Address:

Late TukaramSheth Shinde Parking, Pune Station

Late TukaramSheth Shinde Parking, Pune Station are charging Illegal GST charges over and above parking charges.
It is clearly wrriten on wall that don't pay GST charges and oly pay Rs 2 per hour but the contractor is forcefully charging GST charges along with parking charges and when I asked justification then he told that "Jao jaha bhi complaint karni ho, hamara koi kuch nahi bigad sakta".
I asked for payment slip with GST where GST is mentioned but he denied to share.
Attaching Pay and Park slip FYI