Explain the three-tier-quasi judicial machinery in India under COPRA?

Under COPRA, a three-tier quasijudicial machinery at the district, state and national levels was set up for redressal of consumer disputes. The district-level court called District Forum deals with the cases involving claims upto Rs 20 lakh, the statelevel court called State Commission between Rs 20 lakh and Rs 1 crore and the national-level court — National Commission — deals with cases involving claims exceeding Rs 1 crore. If a case is dismissed in district-level court, a consumer can also appeal in the state and then in national-level courts.