Screaming frustration

Bought the 3.2 TDCI XLT 4x4 D/C March 2013 after they stole my Hilux.My nightmare started at the beginning of 2015 when the bakkie goes into limp mode,sometimes showing the Powertrain warning lamp and sometimes not.I cannot remember how many times I took it to Lazarus Ford to fix,only for them to maybe replace something and hope it fixes the problem,to no avail.Last night at about 11:15 pm driving from Alberton,it happened once again,after pulling of the road(very unsafe as everyone knows) to just restart the bakkie,maybe that helps,I had to drive home with a bakkie with no power and I felt really unsafe.How will this problem be solved as it has only almost 46000km on the clock and fully paid but totally unreliable and this is unacceptable for a car/bakkie of this caliber.I think it is totally unfair that this problem cannot be solved and becomes my big problem as I will not recommend the Ranger to anyone and need to make a plan(don't know how)to get another trusting vehicle.I must note that Tanya from their service dept really tried to help.But I am know furious to say the least....HANDS IN MY HAIR!!!!WHAT MUST I DO.Take responsibility and replace the engine,fix my problem!!!!