Very unprofessional. We hired Angelo to shingle an addition to our porch. We had experienced framers come in and frame the porch, so his only job was to shingle.
It heavily leaks, and when we brought this to his attention he indicated my husband was being untruthful and claimed that it's the fault of the framers, and no fault of his own. He badmouthed other contractors in the process, and got very defensive extremely quickly.
Also, his words, verbatim, we're that "no guarantee was given" on his work. Buyer beware!