Non return of device after repair centre closed at Tyger Valley mall

This is my reference with the Samsung department on which I to date after more than 8 months did not get any reply than an empty promise in June 2017 (Reference ********** 040: Smartlab Quote For Phone Repairs: TVSA067100).

I requested the repairing of my S5 device in 2016 and they provided a quote which I turned down at the stage. The shop would have informed me electronically when to collect my device at Tyger Valley within the Samsung shop. When I enquired in early 2017 why no answer from them I was informed that the company went bankcrupt and that I need to contact Samsung which I did - the person in the shop mention it was a Samsung appointed agent that was operating from the shop. To cut a long story short - still no further reply or decision from Samsung on the whereabouts of my device. I want to be compensated or a new device in return. I entrusted the device to them and expect them to act and provide me with an alternative.