Electrocomp refuse to take back faulty goods

I purchased sealed Lead Acid Afribatt batteries from the store at 1 Electron Avenue Linbro Park, JHB. I later found out that the batteries were old stock confirmed by the date on the battery and the fact that they could not hold charge. The voltage levels were fine but no charge could be held. I then purchased Forbatt batteries from another supplier and they worked fine. No issues at all. Armed with the above proof that the issue is with the batteries that were purchased from Electrocomp, I went back to the store with the invoice and defective batteries that they sold me within the warranty period. The saleman, Julio, told me that that he will get back to me. I waited for over an hour whilst they had the defective batteries with them. I was then told by Julio that his Financial manager will not take the batteries back although they are defective and confirmed old batch but he will get back to me when his line manager arrives at work the next day. Long story short and 1 month later with lots of lies being told by the salesman Julio who I had to keep on contacting as not once did he have the decency to get back to me, I have now been told that any goods sold by them must be returned within 7 days if faulty. This is a good example of ripping off the consumer. Any where else that sells these batteries have a minimum of 1 year warranty, should there be a problem with the battery. Here I have proven that the batteries sold were old stock and batteries from an alternate supplier worked fine. I would advise that nobody deals with a company like this who will knowingly sell you defective goods and refuse to take it back