response from apple feedback assistant?

I am having chronic battery depletion issues with iOS 10.3 public beta since first installing it. I've tried all the usual fixes including reinstalling the public release as a clean install via itunes but nothing helps for more than a few days. I resently submitted feedback through the feedback assistant but am not getting any response. Is there another way to communicate with the apple beta programme. Its leaving my phone practically unusable and certainly unsellable.