Deeply disappointed! Absolutely shocking service from Mercedes- Sandton

Deeply disappointed! Absolutely shocking service from Mercedes.

My car has been at a Mercedes branch in Sandton since Monday 13th September. As of today, 21 September, I have been informed that:

1. There is NO ETA on when I can expect my car 2. The Sandton dealership DOES NOT have a part number ( a rim) for my 2 year old - 2019 model mercedes, which is still under motor plan. As a result, a week later, they have still not ordered the part. 2. Mercedes Sandton have requested pricing from Mercedes SOUTH AFRICA and as of today, they still have not received feedback as Mercedes South Africa also doesnt have the part number for the rim, which is considered to be an accessory.

My car has been sitting at the dealership for over a week and i am non the wiser on what the plan is. I am shcoked that an organization with sophisticated systems and processes, is unable to, within a week, place a part order and communicate to the client accordingly.

Kindly assist with an ETA of the rim in question, as well the pricing. I expected a lot more from a premium brand like Mercedes.