This is my 3rd pump. The catheter from the pump to my spine was found to be broken during surgery for replacing the pump due to battery life. A new catheter and pump were implanted. After surgery I had a badly pinched nerve causing severe pain. An MRI was scheduled to determine the location of the catheter to see if it were against a nerve. The Medtronic documentation states a rep should be present after the MRI to check that the pump is still working correctly. Contacted the rep that was there during surgery so they could attend the MRI. Once the rep found that the MRI was scheduled on a Sunday they said they don't need to be there and to schedule an appointment with your doctor for the next day. And that if there is an issue the pump will alarm. So then what do I do? Listen to an alarm until my doctor appointment the next day?? Very poor patient service!!