Can you refuse to pay cash? The regulations are clear

The expanding usage of payment cards and mobile applications is changing the way we shop. The volume of cashless transactions is growing, 7 out of 10 people positively measure the anticipation of paying in this form in an expanding number of places. However, this does not change the fact that we inactive carry cash in our wallets and want to pay with it. Can individual refuse to do so in a store or service establishment? It is worth knowing the applicable regulations so as not to be amazed at the checkout.