ES Appraisal Services Evalonline Florida A.M.C company owes me over $4,400 for high end properties in Greenwich, CT Internet

I HAVE NOT GOTTEN PAID $4,450 FOR 5 ASSIGNMENTS. Contacted via telephone for 5 assignments over a 3 1/2 month period. High end appraisals. Complex properties. Never thought of investigating an AMC who has BANK OF AMERICA as the client. Performed these appraisals as well as getting an Oath of Appraiser. High end means values from $2,000,000-$5,500,000. Having appraised in this market for over 30 years, NEVER, NEVER have I not gotten paid by someone who engages my services. Never even gave it a thought until my instincts took over. Boiler room type receptivity. Calling me on Saturday nights and Sundays. Updates, request for appraisals. Tons of work offered to me. I started with these 5 jobs (Sept.28) and was told payment was in 60 days. Nothing. Even referred to a manager after I spoke with my cordial contact who told me she would be processing my invoices. Nothing. No checks. Emailng Billing Dept. with no response. Past contact no longer working at company. Left messages on several voicemails for some attention. No response. It is beyond belief as a professional to be treated this way. I will never do business with any company from Florida again. This is BIG TIME FRAUD.