1. An interactive voice response (IVR) data processing system configured for voiceprint tagging for IVR session management, the system comprising: a host gateway configured to receive calls from different callers over a communications network; an IVR system executing in memory of a computing system and establishing IVR sessions with the different callers; and, a voiceprint tagging module coupled to the IVR system and comprising program code enabled to store a voiceprint tag in memory associating a voiceprint of a caller interacting with the IVR system in a corresponding IVR session, with a portion of the IVR session, and to respond to a premature termination of the corresponding IVR session, by re-establishing the prematurely terminated IVR session with the caller at the portion of the corresponding IVR session indicated by the voiceprint tag of the caller.