Santa FE already the second turbo and even more problems power drop

Hello to all professionals here, since our Santa Fe EZ 2008 2.2 CRDI 4WD only causes problems and very high costs I wanted to ask for your opinions. Below an excerpt from our repair list: wheel hub rear at 82000 km turbocharger renewed at 100000 km = 2000,- € temperature sensor + standing bolts + manifold seal 117000 km = 600,- € bar joints front , handlebar 130000 km = 240,- € wheel hub + wheel bearing rear 156000 km = 700,- € 5 weeks ago again a new turbo due Turbo loader + alternator renewed 184000 km = 3000,- € three weeks later again power drop now exhaust gas recirculation valve renewed at 186000 km = 677,- € yesterday, while driving suddenly again no more power, now according to Hyundaiwerkstatt it should be the control valve of the KAT, cost approx. 600,- € We ask ourselves now of course if the workshop wants to earn with us a golden nose, the replacement of the exhaust gas recirculation valve was possibly not necessary. take advantage of our inexperience in the field. Would be very happy about your opinions, tips