A consumer can file a complaint in a consumer court in India for any of the following types of complaints: Defective goods: A consumer can file a complaint if the goods purchased are defective, damaged or not as per the specifications mentioned by the seller. Deficient services: A consumer can file a complaint if the services received are deficient, incomplete or not as per the agreement. Unfair trade practices: A consumer can file a complaint if the seller has used unfair trade practices like misleading advertisements, false claims, charging higher than the MRP, etc. Overcharging: A consumer can file a complaint if the seller has charged more than the agreed price or the Maximum Retail Price (MRP) for the goods or services. Non-redressal of grievances: A consumer can file a complaint if the seller has not addressed their complaint or resolved the issue despite several attempts. Medical negligence: A consumer can file a complaint against a medical professional or a hospital for medical negligence or deficiency in service. Product liability: A consumer can file a complaint against a manufacturer or a seller for damages caused due to defective products. It is important to note that the complaint must be filed within the applicable time limit and must be accompanied by the relevant documents and evidence to support the complaint. The consumer court will hear the complaint and may provide compensation or other relief to the consumer if it finds that there has been a deficiency in the goods or services provided.