CARPORT ROOF CENTRE PIER REMOVAL

0
CARPORT ROOF CENTRE PIER REMOVAL

I have employed a builder to remove the two centre piers on my carport, which is under the main roof of the house.
I asked them to replace the concrete footings and 2 remaining brick piers, at the corners, with steel support posts. as I don’t know the condition of the footings.They haven’t done this and and have used the existing concrete footings with dyna bolts.The posts they have installed are only 3mm thick walls.The contract was verbally agreed and they are claiming that there was no mention of the above work and that it isn’t needed.
Should I be concerned and where do I go from here if I should be.
Best regards,
Ian.