Decoder dead after 3 months

On 8 August 2015 my decoder stopped working. I took it to the service centre at N1 City. They replaced it with a refurbished one which apparently only had a three month warranty. After just over 3 months this decoder is dead. I spoke to two consultants at the call who informed me that I have a 6 months warranty. My wife took the decoder to the service centre today and was told we have to pay another R600 for another refurbished decoder because the warranty has expired. These people just want to make money. Surely, being a loyal customer for many years and the fact that the warranty just expired, means nothing to them. Pity the don't have any competition, otherwise I would have cancelled and move on. Multichoice, your customer service and products are shocking.