Mercedes Nelspruit a bunch of money wolves

I bought a seond hand Mercedes Benz C220 CDI 2008 model. Drove the vehicle for 6 months without hassle. Vehicle injectors started leaking and reconditioned / repaired these. Vehicle then presented with a no start due to low rail pressure. Towed the vehicle to Mercedes Benz in Nelspruit for a quote. The dealer then informed me that they refuse to work on the vehicle unless I refit the EGR / DPF that has been removed previously. This has zero bearing on the rail pressure issue and is also costing an arm and a leg. To me this is a load of nonsense and very poor service from Mercedes. I will thus in future ONLY support small business owners and these large franchise companies can go to the proverbial hell for all I care. I also drive an AMG by the way which I may consider swapping to another brand.