Mercedes-Benz South Africa - No longer a premium brand

When I bought a second-hand 2015 GLA in 2017 with 54000km I was assured that the maintenance plan can be extended by 40,000 or 60,000 or 80,000km as long as the period did not exceed 8 years from new and as long as the extension was purchased before 100,000km. I obtained a quote in 2018 and all the options were still available. A quote was again obtained in May 2019 with the intention to finalise saving the funds to purchase the maintenance plan. At the start of July 2019 sufficient funds were saved. The maintenance plan options were now however drastically changed in that the 80,000km option was no longer available and the 60,000km plan's price doubled from R1/km to R2/km. There is no arguing that a manufacturer has the right to change prices and offerings but with inflation being around the 6% mark (and less) over the last few years and the ZAR has been not depreciated by nearly that much, the question arises why such a fundamental change in hiking an extended plan by 100% and reducing the options? Are they: - protecting themselves against a defect on the GLA that has become apparent on the higher mileage vehicles and not telling the consumer? - trying to force the sales of new vehicles in a depressed economy by inflating the extended maintenance plan price to the point where, if one has a bit of luck, there is no economic sense in buying it but rather put the money to the purchase price of a new car? - simply no longer behind their brand as has been the case in the past but still demanding a premium price at the sales point, again without telling the consumer? Whatever the reason, Mercedes-Benz South Africa appears to just no longer be the premium brand it claims to be. Seems to be much better to purchase a vehicle from a less “premium claiming” manufacturer at a lower price point and not have the expectation that such a manufacturer will back its brand, Clearly Mercedes-Benz South Africa has made this decision. Goodbye to them, any ideas to purchase another one has been flushed.