Samsung service is non existant

On Monday 4th March our fridge/freezer packed up. I immediately contacted Samsung who eventually passed me on to MM electronics in Morningside. They asked for a R500 payment for a callout. This took place on Wednesday 6th. They then asked for a payment of R3100 for a new compressor. At no stage was there any communication from MM. nor did any of their staff return numerous calls. On Monday 11th a service man arrived to install a new compressor. $ hours later he left saying the unit would be collected first thing on Tuesday 12th. By mid day nothing had happened. After 8 attempts to get through to MM I spoke to one of their people who could not tell me what was going on. I then phoned Samsung, who told me that they would get back to me - in 48 hours! I then spoke to his Manager who promised to call me back in 5 minutes. I am still waiting for the call and we are still without a fridge and freezer.