People walk past a Wal-Mart sign in Rogers, Arkansas (Reuters) Reuters

A disabled shopper has been banned from US retailer Walmart for life after trying to ad-match a product.

In hope of a discount, Joe Cantrell tried to ad match a product at Walmart because of the chain's policy of matching the lowest advertised price on identical products.

However, Cantrell complained to management after a Walmart employee told him that ad-matching was not allowed. The member of staff subsequently called the local Sheriff's office as he felt threatened.

When Cantrell, a former wrestler disabled by years of injuries, tried to return to the store four days later, three policemen arrested him and handed him a court summons that banned him from every Walmart in the world for life.

"I was handcuffed, humilitated and embarrassed in front of everybody at Walmart," Cantrell said.

"I felt shamed. I felt like I was the bad guy. And I know I'm not a bad guy," he continued.

Cantrell visits Walmart twice a day, once in the morning and then again in the evening, so it is surprising that such a loyal customer would be treated in this way.

"I just love Walmart and that's why I go," he said.

The officers who arrested Cantrell realised both his innocence and his love for Walmart as they let him go shortly after.

He still faces charges of intimidation and disorderly conduct and he remains banned from Walmart for life.