Who can test my 1996 Camry LE V6 ECU, KeyFob remote(s) with new disk batteries?

You can easily do this yourself. The batteries are available at almost any drug store or on Amazon. Here is a minute-and-a-half video that shows you how to replace them. Replacing battery seems easy and testing is also easy. https://www.google.com/url?sa=t&source=web&rct=j&url=https://blog.keylessentryremotefob.com/2015/10/how-to-replace-toyota-camry-key-fob_15.html%3Fm%3D1&ved=2ahUKEwjh572S58_dAhXF5p8KHdpHChIQFjAKegQIABAB&usg=AOvVaw1UjntA5Z7RljKKX-mHBGu-

You should call them.