I bought NAD tape deck through quikr delivery. Before accepting the item I tested it rigorously and the delivery guy was waiting calmly. While taking the delivery if the item isn't at per the advertisement, you can reject that. Also I have sold items in quikr and once it got rejected and came back from the customer. If it's electronic item, better to check thoroughly, they will wait.
But if the item condition is as er the description on the advertisement, not sure if you can reject it. you need to then talk to quikr customer care. i had good experience till now.