service is unacceptable no feedback from customer care

on the 19th April my device was collected as it was faulty the screen was flickering which took them almost a week to collect from me. i have been emailing the consultant no stop as she advised she will be providing updates regarding the device which is the biggest joke as i had to phone in myself to get update which i was told by her that she will provide feedback. this is the worst service EVER. will not recommend them to anyone.