Craked Tablet

I purchased a Samsung TAB3 last year, 1 month in I cracked the screen. I sent the tablet in for repairs and after some time they came back to me stating costs to repair is circa R3K. I asked for the tablet to come back and they advised that I need to pay costs for it to return. Due to me losing the reference number I made payment late. I kept going in to the store to check on the tablet and requested for the reference number right up until Jan 2015. No one advised that as payemtn was made late the tablet was defrayed and sold. I now have paid for a tablet for 12 months and have a further 12 months to go on an item I will never enjoy. Surely emails, calls, texts etc should come through and a number at that as well if 1 is missed or deleted in error. All in all I probably went in 4 or 5 times to check on the tablet and when I emailed through the proof of payment this Jan from the store no one told me of this....lI want this fixed, I cannot be paying for a device which I've not used and will never use whilst the item was sold off without me knowing.