Is there no limit to convenience fee?

I booked a deal on which I incurred a convenience fee(not the cover charge), now at the time of paying the bill I have to again pay a hefty fee of Rs 85 as convenience charge. Is there no limit to it?

I booked a deal on which I incurred a convenience fee(not the cover charge), now at the time of paying the bill I have to again pay a hefty fee of Rs 85 as convenience charge. Is there no limit to it?