Worts shopping experience ever.

I bought 6 solar lights, all certified as IP 67, meaning that the lights has sealed beams and no moisture or dust can penetrate, the sealed unit. I discovered after seven month that AL SIX lights had moistures and water in the sealed beams. I followed the procedure and ask for the items to be returned, and was granted return acceptance. The next day I was told that three of the items were out of warranty. I explained that all six lights had the same latent defect, and/manufacturing fault and this has nothing to do with the warranty, if it was only the warranty, why did they allow me to return the items in the first place. They send three of the faulty lights back to me, when I went tp pick up the lights only ONE item was send back, two are missing. After several e-mails and phone calls no REPONSE from takealot.