Disappointed in BMW

I am not happy with BMW. I purchased my BMW f900R in April, which was a cash sale. I took my bike for its 1000km service and on the way there an engine control fault came up. I advised Motorrad Pinetown and they said they would look at it. After waiting very long after 5 hours I got my bike and went home. The following day, the same fault came up. I called BMW and they collected the bike. It had now been 2 weeks and still no joy. They have done all the tests possible and fault is still coming up. Now all I want is a solution. This is pathetic as I even have a rally this weekend and I don’t have my own bike to use. Never expected this with a brand new bike. BMW come to the party and replace my bike or give me my money back!