Sounds to me like you are getting the run around and a very expensive one at that. I would highly recommend that you call Ship Shape Pest Control who are located in Pompano; ask for Robert and tell that Tom Priester from Keller Williams recommended him. Their number is 954 933-0782. He recently inspected a home for me that required tenting; not nearly as large as yours as it was 1,890 livable square feet on one level and his cost for tenting was $850. I represented the buyer and we were able to get the seller to pay for the work and they had another company do the tenting. Cost will be based on cubic feet but Robert will be straight with you.
Best of luck and remember there are only two types of houses in Florida; those that have termites and those that will get them.
Always at Your Service,
Tom Priester e-PRO
"Results Driven Real Estate"
Keller Williams Realty