In the UK we have a company called Boots which used to be a pharmaceutical giant and is now a high street toothpaste and moisturiser giant. At the counter, they

In the UK we have a company called Boots which used to be a pharmaceutical giant and is now a high street toothpaste and moisturiser giant. At the counter, they always ask if I have a 'Boots card' (purchase tracking card). I say no, because I don't, and they are often confused - because it's weird to not only have presented one immediately, but to claim not to own one. I'm then told I can be given my 'points' on a receipt so that I can add them to my (non-existent) card later. I'm not a tin foil hat type, but I really don't like filling my wallet with tracking cards and can't be bothered to claim the miniscule compensatory benefits provided in return for proffering my purchase (and also location, hygiene, etc.) information. Saying 'no' is almost more hassle than simply submitting, however, which is probably exactly what the company would like to hear. Suggestions welcome for brushing off this nuisance without a) Avoiding their shops entirely (not practical) or b) Being rude to cashiers.