1) Someone buys a car off you without viewing it
2) They phone you to arrange a time, and then come to your house, give you the cash and drive off with the car
3) They then get a phone call from you, telling them that they’ve forgotten the keyfob which controls the remote central locking and the alarm system, but they don’t answer the phone, listen to their voicemail or return a missed call
4) Over 24 hours later, they text you and ask why the alarm and RCL does not work. You tell them why.
5) You also explain a time and place that they are able to collect the keyfob to rectify the problem. They agree and thank you.
6) They then do not show up. They also make no effort to contact you to explain why, nor attempt to rearrange the collection.
Need I go on?