Why do you even ask, whether William Calabretta is really a scammer, or maybe not? Skepticism is a healthy doubt when faced with a lack of credible evidence, or lack thereof to the contrary.
A community member has initiated a collaboration campaign to investigate, research, interview, gather evidence, and compile a comprehensive dossier on William Calabretta. This webpage will, therefore, help in consolidating all information with which you can draw logical and valid inferences and conclusions.
FYI, William Calabretta is associated with Morgan Stanley at Boca Raton, Florida. In this line of work, nothing could ever surprise us anymore. So we want and see…
In previous investigative reports on similar entities/individuals, the Skeptic Tank community unearthed serious issues related to –

Fraud
Money Laundering
Litigations and Lawsuits
Sexual Haras

View the Scam Report for Is William Calabretta a Scammer? on YSCAM.com at –

www.yscam.com/review/is-william-calabretta-a-scammer/