I received the "Royal Mail Buy Tracking" scam warning text message below. The warning text is being sent by scammers who are attempting to trick recipients into clicking on the link in it. The link goes to a fake or phishing Royal Mail website that steals personal and credit card information. Therefore, recipients are asked not to follow the instructions in it.
The Royal Mail Buy Tracking Scam
Royal Mail: Your package has a £2.99 shipping fee, to pay this now visit https://royalmail-shipping.support. Actions will be taken if you do not pay this fee.