No. IRS regulations are very specific on what expenses are eligible and ineligible for dependent care account (DCA) spending. Regardless of your actual arrangement with your provider, if your documentation/receipts show an expense that is not eligible for DCA spending, your claim will be denied.
If you are unsure if your documentation/receipts meet IRS compliance standards, we highly recommend you have your provider sign/stamp your Ameriflex claim form. If the provider signs or stamps the form, no itemized receipt is needed.