Is the Droid Turbo 2 the phone you switched to? What was the old phone? Do you have the HD Voice feature on your line?
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Check online to make sure you still have the Ringback Tone. Then, if it is still there, call Verizon to ensure the feature is still on the line.