CCTV footage as proof of receipt?

<p>I went to CNA Cornwall View in Elarduspark, Pretoria to return a faulty WD Elements 1TB harddrive. My husband wanted to format the harddrive, but it took about 2 days to get to 20% of formatting and he could not get any further. I have explained this to the Representative and she said they will need to send it in for repair or approval to replace it, this might take 3 to 4 weeks. I then handed the harddrive over to her and she gave me a small piece of a blank receipt to write my contact details on. She gave me my original receipt upon purchase and expected to leave without any form of documentation or proof that she has taken the harddrive. I asked if she could please provide me with proof in writing that I have handed the hdd in together with the serial number, date of purchase and my details. She said I can use the CCTV footage of the store as my proof?! I again asked to which she refused and when I insisted she got mad at me. I took the harddrive with the original receipt and left the store. </p>