NO FEEDBACK IN OVER 6 MONTHS

I bought a hair clipper last year in August for R599.00 which was defective/ or very poor quality (zhing zhong) as it only works once. I was expecting to get utility for a long time since l could get same product at Shoprite for R60. Actually, the clipper l bought for R60 saved me for almost a year. When l try to use for the second time it was already dead. l took it back to the stock for exchange or refund but unfortunately l lost my receipt. l had to get my bank statement to show them the transaction as luckily enough l used my debit card for the purchase. The manager checked for the purchase in their back office to no avail. l left both the hair clipper and my proof of purchase (bank statement) for him to send it to their head office/IT/Accounts to check for my payment in September 2015. l never heard from anyone until today - 6 months later. All l need is my refund. Please process for my refund urgently.