I have a VW Sharan for my tribe. I know they are not cheap, but mine is a 1998 with almost 100,000 on it and it has been indestructible. First VW I ever had, but will keep till it falls apart completely.
Sorry for your hassles - my old 7 seater Renault Savannah used to pack up regularly and it's way not funny when the family are looking to you every day for transport / taxi services
Hope you get sorted soon - don't give up!