Samsung repair agents in Durban are useless

I took my Samsung washing machine in as it was not draining. I was told to pay R300 for a quote and that the quote would take 3 days to complete. Needless to say, after several follow ups, it took them 3 weeks to provide a quote. They then had a shopping list of items that needed to be replaced, many not pertaining to the drainage issue. They now require a 50% deposit to continue, which I am reluctant to pay, given the poor service to date. I wonder if Samsung is aware of their poor service, and how they are tarnishing their brand