VSA light comes on and the brakes grind

So I changed the brakes on my car just the pads and the pedal wasn't getting pressure. So took to a mechanic and he said we had a bad master cylinder so he replaced it. When we took it back and right before we get home this grinding and burning smell was coming from the brakes and we couldn't turn and it was hard to turn. We called him he said drive it it's fine it's just some oil on the pads, but the problem persisted and the VSA light, ABS, the a/t temperature light came on and the front driver side brake was sorta smoking and under the hood it smelt like eggs. So he towed it back said it was a bad pump on the master cylinder. We brought to replace the bad one and then we re replaced the master cylinder and got the car back again, but soon as we drove it we had to pull over there was this humming noise or sum vibration and then the VSA light came on and could barely move or turn the corner to pull over. He tells me now it's a bad ABS pump on my truck.