Some items sold on Souq.com come with its own Official warranty. Whenever you face any issue you will find enclosed instructions in the box that directs you to the authorized service center that could repair the item.
You could either go directly to the service center or request souq.com to handle this process for you. To request help from Souq.com please issue a return from your order page and state that the item is defective. A courier will come and pickup the item from you and return it back once fixed.