Don't book a covid test kit collection if you can't be bothered to actually do the test. Don't book a collection if you don't like getting up and answering the door early on a Sunday. Don't book at collection if you have plans to go out (don't fucking go out if you have covid symptoms and have requested a test). Tell your housmates or family members that you are doing a test, it's not a secret, after all they will have to isolate if you test positive. Read the fucking instructions. Stop wasting everyone's time and NHS resources.