Poor service from BMW dealer

I bought a almost new2018 bmw 300gs motorcycle with530km on. The second week of driving it I saw it was leaking engine coolant. Kilometer reading 1621km. I phoned the selling dealer and was told to bring in the bike. I returned the bike 28 March the afternoon. I was told that the workshop is fully booked and that they will only start working on the bike on Monday 1 April. On 2 April late the afternoon we called as no one has called me to explain what was happening with the bike. Apparently the waterpump has failed and this caused the engine to overheat and pushed out the engine coolant. Bmw has no spare part for this model as it is new. I was told that it would take 7 days to import this part. I do understand that mechanical parts do fail. 1. What I do not except is the non communication from dealer to me. 2. I would expect dealer to offer me a loan bike as I told them that my purpose for this purchase is to use it to work and back and I travel 167km every day. Now I am without R74900.00 as I paid cash for this bike and no bike to use. 3. I am so dissapointed in the dealer. If this is the way bmw handels there customers then this will be my first and last bmw I buy Regards P. E. Simmonds