I want my refund! 532B5F15B23B

I am absolutely appalled at the bad customer service Orange gives to their customers. I sent my device back for repairs on the 5th May. I don't get any feedback with regards to what is going on with the repairs unless I email the customer service centre. When I email them I have to wait days for a reply. No one at the customer service centre knows what is going on. I had to call the repair centre myself to finally get the answer that the device was sent back to the Orange Warehouse ages ago because they couldn't repair it. I don't understand how a telecommunications company is unable to communicate properly? Now they say that the device has been sent to a other repair centre. How long is this going to go on for? I want my refund ASAP or I will file a lawsuit against this company. I will never buy from them again and I will definitely tell every single person I know not to as well.