Sephyn74 - you may be confusing refusal of service with discrimination. No company can refuse service to an individual or group of individuals solely on the basis of their race, religion, sex or disability. Saying "We won't allow you to shop here because you're Asian" or "We won't take your money because you're Jewish" would be illegal. Saying "We're not serving you because you just gave the cashier a mouthful of abuse" is within any company's legal rights.

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire