Thank you reaching out to us, ALECAB92. It is important to us that you are able to hear these calls when you are contacted and I would be glad to help.
Have you attempted to power the phone off and back on? When did this first occur? Does the phone any physical/water damage at all?
Follow us on Twitter @VZWSupport
If my response answered your question please click the 'Correct Answer' button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!