Cardiotens from Kranjan ENTERPRISES Delhi - Want to return due over cost

i ordered an eye capsules from kranjan enterprises and it seemed they were fraud as they didn’t give their company details and they weren’t not ready to do online transactions and asked us to do cod. when the order arrived i did gpay to the courier person and he gave me the order. when i called them up they said it was a wrong number. the product is available on amazon for *** per piece and they charged **** for * pieces that means * times more than the actual mrp. this is completely fraud and i want to return this product please do the needful.