Most importantly — communicate on the positive impact that your changes have driven along with the ones that delivered no value. When you communicate on the ones that didn’t behave as expected — tell people what you’ve learn from it.
Encourage your whole team to go sit in the contact centre and listen to calls. Get them to dive into your UX research tools and read the customer statements. Invite them along to guerrilla user testing in your local cafe. Everyone should be involved with seeing their users of their products interact with them.