Used goods received and return declined

I purchased 12V batteries, which were sold as a bundle of two, from Takealot. These were delivered in my absence, as I had to take an unscheduled trip. On my return 8 days after delivery, I opened the box to find that I had been sent one new shrink wrapped battery in an intact box, and one open, scratched, dirty obviously used battery in a broken box. These were taped together as a bundle. I logged a return as I had been sent a used item in damaged packaging. The return eligibility was confirmed and the goods were collected. Subsequently the return was declined because it had to supposedly be returned within 7 days. So Takealot sends used goods purchased as new, and then refuses to refund. It appears that they didn’t even read the my explanation of my complaint accompanying the return. It remains to be seen whether they will return the goods that were purchased. Congratulations Takealot, you have just lost a (very good) customer!