I suspect that you require an employer identification number EIN to report Dependent Care Expenses on IRS form 2441. Reporting the EIN is a requirement of qualifying for the credit.
Hopefully, this website provides the EIN that you require.
By law, not-for-profit organizations must make their financial information available to the public. In fact, IRS forms 990 is an annual information return that may be available online for the organization.
Perhaps the person that you talked to was unaware of these issues.
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