Xiaomi — Front Camera not working

First product of XIAOMI and bad taste. I bought 4iMi phone just 8-10 days back and within 2days front camera went faulty . The image coming is very blurred. This is my first purchase of XIAOMI product and the experince has been really very bad. Making it more worse now handset is kept by service center and repair time is 8-10 days. What is this ? Are you not aware this is smart phone . Why would have i invested in this ? All my offical work which i use to carryout while travelling or from home is stuck . I should have been provided a new handset immediately. Here the fault is not mine but that of XIAOMI who is compromising on product quality. I am requesting you to plesae share mail id's of top bosses of Xioami to esclate my problem . Else i have no way except to tell friends not to go ahead for purchasing any product from XIAOMI. Expecting postive reply from your end. Regards, Mukul [protected]@rediffmail.com