Mileage tampering

They turn back odometers on cars, commiting *****! A week after I sold my vehicle, I saw it at their dealership for R70k more than what I got, at R199k. This price is way too high for a 2013 model with 281 000km on the clock, with previous body damage and torn driver seat... When I phoned and enquired the salesman told me that the vehicle had only done 189000km, almost 100k less than the actual. I have tracker data and service invoices to prove the actual mileage.