I have a contract with a builder to a home. It has Lender A in the contract but things did not work out well with him

and I had approached another lender, who I was workning with, but my Loan got denied with Lender B.

I approached the builder sales person to refund my money as the contract says if Loan is denied that the buyer will get money back.

But the sales person says since its not the Lender A with whom the Loan is not denied they will not refund my money. This is in state of Georiga

any advise. Here is the contract wordings 

In the event that Purchaser is unable to obtain a loan or commitment for a loan from the Mortgage Lender within thirty
(30) days of the date of this Agreement and such failure is the result of a denial of the loan application by the Mortgage Lender or the failure
of the Mortgage Lender to complete the timely processing of the loan application, Seller shall have the option at any time thereafter to declare
this Agreement null and void upon written notice to Purchaser, and all earnest money paid hereunder shall be refunded to Purchaser. In the
event that Purchaser is unable to obtain a loan or commitment for a loan from the Mortgage Lender within thirty (30) days of the date of this
Agreement for any other reason, Seller shall have the option at any time thereafter to declare this Agreement null and void upon written notice
to Purchaser and Seller shall retain all earnest mone