I sent an email to Target regarding my coupon experience this week and got what appeared to be a form type letter reply simply stating what type of coupons they accept - which I already knew. So I called Guest Relations. The response I got was pretty much "Sorry about that. If it happens again you can call us from the store so we can work with the management team to figure out what is occuring."
Not exactly satisfactory, but at least this way I knew a real person had to listen to my complaint so I felt heard.