You would be best served in seeking a personal injury attorney at least for advice. If you retain one, they only take a percentage of the payment. It will depend on the negligence of the Sam' Club employee and the extent of your injuries. As all of the injuries were "soft tissue" injuries (i.e. no broken bones), it is doubtful that they will pay much in damages.
The information provided in this answer does not create an attorney-client relationship. If you are interested in his legal services, feel free to call Chris at (303) 409-7635 at his law office in the Denver Tech Center. All initial consultations are free of charge.
Make sure that an incident report was filed.
There may be coverage if you are injured under medical payments provisions of the Sam's Club insurance.
If your wife is not injured enough to receive medical treatment it make by a tough case.
If she is injured I recommend that you seek a consultation with a local personal injury attorney. You can find a qualified attorney on AVVO.
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Get a free consult with a lawyer. Get your wife checked thoroughly by her doctor. Get photos of her injuries/bruises. Dont give a staement or sign anything from Sams. They are not looking to help you, only to deny the claim.
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