Poor service

I bought a polo 1.2 TSI comfort line 2015 last here June 2018 from Volkswagen Constantia I was assisted by their sales guy by the name of Tshepo never have I ever received such bad service from such a big company, it was my job to follow up on my vehicle eventually when I received the car it only came with one car key yet I signed for 2 car keys the sales guy since last year has not provided me with my second set of keys each and everytime it becomes my job to go and get an update on what belongs to me because he does not follow with me he ignores my e-mails and messages I even asked the manager for assistance by the name of Mpho he as well does not seem interested in assisting me and its now been a year and 3 months, I am really disappointed in the service at this place I even called for assistance to have the car serviced they got back to me 2 weeks later and I already took the car to Volkswagen in Westgate where I was assisted I met the previous owners that the car belong to and the old owners told me they have given them both sets of keys and they asked if I was assisted by Tshepo I responded with a yes and they responded that he gives the worst service ever he keeps texting me telling me he will be giving me my keys and it's been 15 months later I have no idea what would happen if I loose or misplace the key I have currently for the car assistance will be really appreciated because this is really poor service and I have reffered friends to them and they are currently receiving the same poor service from such a company as a customer I feel unappreciated