Takealot refusing refund

I am actually in shock. I purchased a sewing machine from Takealot. However when I received the item it looked like a child’s toy. Terrible, plastic and not worth the price. I opened the box, took machine out but didn’t even unwrap The cling wrap around it. Put it back and logged a return. I returned the item To the pick up point and they even took photos of the item. Now they refuse To refund me? Saying product Was not in original packaging. ??????. I will not accept This and I order a lot from Them as Do my friends and clients. This is not acceptable. I’m prepared to take this to an attorney and undergo an affidavit, lie detector Anything! My mom Passed Away recently and she wanted me to continue with dressmaking , I used money from My inheritance for This. My heart is shattered!