HTC India — Mobile repairing

My name is kulbhushan i send my mobile htc deidire 830 in dubai care centre but 20 days have gone but my mobile is not repaired this compny service is too bad. I dont know what is the actual matter but since 21 days iam going daily to shopkeeper and asked him my phone is getting repaired then he said just your mobile would came with in two days. But my mobile is not repaired iam very upset in their service. He already gave me a repairing service paper card in that mention the proper time of repairing time limit 15 days but i think the all instruction are false. The compony should care about custmor if it would do that the cutomer would not get their product.