MAKRO / BOSCH / SIEMENS - POOR SERVICE DELIVERY

My washing machine was purchased from Makro and is still under guarantee/warranty. My machine stopped working last Friday (04/11) and I called Makro with my details - my reference is ***. I called on Monday again the lady advised that they still need to allocate a technician to come out. Bosch called yesterday saying they will come but I was not available. They pitch up today after 2 calls and advised that they need to order the part - the part will take three to four weeks to arrive. This is frustrating!!!! I bought my machine with the intention of reputable service/guarantee etc. I refuse to wait 3-4 weeks for a part - Can I have my refund??????????????