Bad Service from BMW

On Friday the 04/05/2018 my car showed me a sign drive train after 2 day prior that I saw some smoke coming through from the left side of the tyre. Then I took it there O was assisted by the guy called Walter who showed no interest what so ever after I explained the problem in the car eventually he called Gerhard who is the mechanic to check my car. Which he was very friendly and told me that the car cannot be driven any further there was oil leak. Then he referred me back to Walter and he explained to him that he needs to book the car in as it is in an undrivable state. Walter did the Job card and informed me that they can't assist me with a car hire they need to diagnosed the car and if they have time they will do that next week. I told him so many times that I'm new in Limpopo I'm still looking for a place to stay and I can't not have a car but he was not interested, he told me to wait for the shuttle that's all they can do for me. After sitting for an hour I decided to look for a manager and explain my situation. He told me that they diagnosed the car as soon as the space is available and give me feedback same day. Which he did and kept updated through the day with sms. Now today my car is still showing the same sign and has no power. My concern is that I took this car to BMW which they suppose to assist me. It's my first time Buying BMW and it's not even 2 months but they don't even know how to fix their own brand. Next week I need to go home to the Eastern Cape how am I suppose to drive a car that even their own mechanics can't fix. I am Mercedes-Benz customer for years I never experienced this incompetence and poor customer service. I am very frustrated and disappointed in the last 20 years of owning cars I never seen such. Please get back to me with solution. If the motor plan expires while I have been reporting a problem in car I will not pay for it because I have a feeling that you're just wasting my time hoping for the motor plan to expire then you can charge me.