Bad experience with Store Check-Out or Personnel when Couponing , RESPONSE

Submission Statement: When people report their experience of NOT receiving their DUE right to a ''successful'' coupon submission or BAD reactions from corporate personnel while In-Store, a RESPONSE
should be initiated to correct the WRONG.

From my experiences:

Never give in (only as last resort), as you are the CUSTOMER, ask politely for a review, if you have patience, step aside let the line die down and ask for a re-check of Check-Out. You are in control!

Report to corporate and give bad review, it always sends a message to the regional manager about Customer Service dissatifaction and possible ''Social Media'' backlash.
BBB online complaints serve as a backstop to corporate mis-steps and your State Civil Rights Division serve as a major embarassment when you are disabled or have a handicap.
(having carpal tunnel or a bum knee can do damage to a corporate image of wrongs to the public)

My CSR experiences are much better across all stores I visit as I do surveys and I email corporate on In-Store experiences. It pays to be patience and insistent as rewards for speaking up are given and retraining for that store personnel.
{McDs, Burger King, Target, Walmart, CVS, former Rite-Aid, Boston Market, Smashburger and others)