renault trafic mkII?

here we go took it to a garage with a starting problem the computer came up with 8 elec problems they cleaned some sensors and got it down to 1 which they put a new fuel pressure [switch/sensor/regulator] dummys come to mind heard dif every time now there is no fuel going to the filter or rail and the solonoid is buzzing on top of the pump got it towed home before they done anymore damage can anyone help please all fuel lines are clear