Dissapointment in Mercedes Benz

My kids purchased a mercedes benz c250 avantagarde for my 60th birthday gift for me in January 2017 at the NMI mercedes branch in old fort road.When i took delivery of the vehicle it didnt have the mercedesme software installed and i was not offered it at the time of purchase!This software or app (mercedesme)was introduced in 2017 and when i took the vehicle for yearly service still nobody picked up that the vehicle didnot have a software on the system. On 20 August 2018 I was hijacked and when the sales consultant lady who heard about the incident called me iterated was the vehicle fitted with the software and adapter which I knew nothing of , no call,email or text/sms communication was passed to me or my family members about those softwares/devices when verifed on their systems! I called mercedes benz south africa they advised that the dealership is responsible and i should deal with them directly with no courtesy or compassion from their side! I Communicated with the Complaints Manager at NMI and all he said was they flagged it with all mercedes benz branches so that it does not happen again.

This vehicle was paid for in full plus R500k direct eft and all mercedes can say is that they flagged other dealerships! This is not acceptable had the ME devices been installed , my vehicle would of been recovered!

Another major point is that all other vehicle owners were communicated about the adaptors for their vehicles only i was not contacted!

I trust that mercedes benz south africa can sort this out with dealership responsible urgently

Thanks