SOUTH BEND, INDIANA -- I have Onstar on my H3. I agreed to accept a promotion for phone mins. I called back to cancel, Nov of 2012, and the representative ask if I wanted to participate in some other service. I said yes, if it's free. She didn't say to call back to cancel it. I rec'd a call on Onstar to update my account mos later, end of July, 14. When I called back, long story short, I found out they had charged my card 500.00, 29.00 a month After a dozen calls, they refunded 2 mos. Granted, my wife didn't catch the charges. But, I didn't want the service, didn't need it, and didn't know I even had it. They claimed too bad, I agreed to it someplace. 400.00 out the window! Onstar is despicable. I recommend that people run to get away from them.