Dealership problem or riding the clutch

[Jovilisi Qioniwasa]

My uncle brought a new Land Cruiser Prado in the 2012,in the year 2018 the clutch started slipping so he went to the dealership and fitted or they had done something to overcome the slipping problem, within the year 2019 his clutch slipped 3 times with those 3 slipping accidents he took his car to the dealership...the last time his clutch slipped what two months ago now his clutches is slipping again

Any advice with the issue above please let us know