false promises

I ordered parts, and was forced to pay in full for the parts on 12 February 2021 from Dylan. It is 6 weeks later, and my parts are still not here. I follow up on a constant basis, but all i get from them is they don't know when it will arrive. How can you as a dealer not know when parts will arrive, this after you promises me delivery in 3 weeks. mercedes benz South Africa is extremely bad, especially when it comes to after sales service. if i can advise you, don't buy Mercedes, you will get stuck with your vehicle for months, with no answers.