BAD SERVICE AND POOR WORKMANSHIP

After taking my wheels there 5 time to weld a crack in the mag,it kept running flat, they took some silicon and put it on the crack on the inside, so eventually the silicon came off and I drove with a flat wheel and damaged the tyre, they refuse to acknowledge that its their fault and refuse to replace it, after struggling for a week to get hold of the owner and being promised a answer everyday I finally got one saying that they not going to replace it ...wont ever use them again