Bad service delivery

Ntt Volkswagen paarl think calourd people are stupid ,I took my 2018 polo tsi to them on the 22 January 2020 for faulty battery, because I have to push my car every time I turn of the ignition and I'm in sales .they checked it and sad yes they have to replace it because is still under warranty, but it would take up to 4 weeks because they have to order a battery from Germany.I felt so important (not).They say that there is no baterys in the whole of South Africa,but they have a factory in port Elizabeth!!!!!I ask them for rental car to drive for the 4 weeks but they say they don't have 1.I'm so disappointed in Volkswagen paarl ,it's the worst experience I have from any other dealer's that they can help there customer's ..I'm thinking I should service my car at a deferent dealer ship.if I were white it would probably a different story just saying.i probably have to push my car for 4 weeks,and they did not even attend to the air bag light and air con refill but the car was there for a full day.