Sick of my Renault van

I've had 110 car since driving and this must be the worse thing I've ever owned

Since buying it the heaters only work when I'm on the motorway and within a month I've had two water pumps go on the van I took the heater matrix out yesterday because I thought that was blocked but that turned out to be fine.over an hour bleeding the system I had some nice heat in the van but this morning I came out of b&q to find a puddle

I'm at my wits end with the van trying to get it sorted out

Help anyone