No Feedback after several requests

i sent my sony xperia for repairs on the 15 Jan, i dropped it off at the warehouse, the only info i received was from orange saying they have received my device, weeks went by and i asked for an update i was told they asked the repair centre for an update and awaiting feedback, days went by no feedback i asked again they said they still received no feedback from the repair centre and have to wait theres nothing they can do, i asked for the repair centres contact details to follow up myself they told me the repair centre does not have a helpdesk all we can do it wait, now this is ****ing me off because its not the first time i had a repair done with orange & Sony, the last time they provided an update when i requested one, at least i was told it takes 30 days and i've its not repaired in 30 days i would receive a replacement, with this repair nothing! i dont even know if my device still exists. its unacceptable in four days it would be exactly 30 days!