Stale tinkies

I purchased 2 boxes of Tinkies and it was stale,the store wont take it back as i don't have the receipt. I contacted Tiger Brands on the 19 December and sent all the info they requested and its now over a month with no response, reference number TB***,I sent the images and details via a watsapnumber that was provided and i have been messaging them from the 28th till current and msgs all read and total ignorance.Their customer service is pathethic,really speaks volumes.They show no interest.