I'd go up the chain of command and forget about the rep.
Contact Medtronic SensorRestor Neuru Stimulator directly by calling and or emailing anyone in the management or sales until you get some responses.

Or if your medical ins paid for most of it perhaps contacting them for assistance as they paid for something that is not safe or functional.
Surely there is a warranty for possible defective units?

But it sounds defective to me. And you shouldn't have to suffer when they got paid for it.

hi I do not have a scs. and its scary stories like this and others that steers me away plus surgery always scared me. but I have seen this as a common issue amongst many. you should defiantly speak with your PM dr or who, di this, and your insurance, plus if the scs company is avoiding you write letters, call daily or 2/3 times a day, call the hospital or facility that was used for this procedure. and if they don't help you I would go to the press. your pain is real, the issue is real and their jobs exist to HELP people such as you. you might need a whole new unit or maybe just the controller or receiver is off. good luck keep us informed of your status. good luck and god speed