Warranty rejected on motherboard

I bought a motherboard from [URL Removed] in 2014 which had a 3 year warranty. On 20 December 2015 the motherboard failed and Takealot collected it for repairs. I packaged the board correctly in its original packaging with bubble wrap, and inspected the board for damage (with two witnesses) before sending it. On the 11th of January (22 days after reporting the fault) the motherboard arrived back from the supplier (Corex) with a report (doc number 312738 CRO 031273) that said they have rejected the repair due to physical damage to the board. They said there were scratches on the tracks and damage to a component and sent a photo with it. This was not there when it was couriered. They have voided the warranty, and said they will repair it at my cost if I so choose. This is ridiculous, as there was no physical damage on my side.