appliance repair team

I had them come in to fix my cooktop and microwave. On the phone, they said their dispatch fee was 80 and when I asked them for their labour rate, they said they did not have one and the technitian would provide a quote after doing a diagnostic. The technitian then said it would cost me $316 for a diagnostic analysis which had to be paid upfront. After the dignostic was completed, he quoted me $700 for cooktop parts which is nearly half the cost of a brand new cooktop and and $600 for microwave parts. At that price I could get 2 new microwaves. I said I would think about the repair and let them know and he had me sign off the invoice and left. After he left I checked the cooktop and there was a large crack on the glass cooktop that was not there before.
I immediately called the company and even sent pictures as proof that the cook top was not damaged this morning prior to his arrival, but they refused to take responsiblity.
Stay away from this company as they have no idea what they are doing and they refuse to take responsibility for damages caused.