SIM card not working , I need to cancel my SIM card and get another one

BrianHe_1652664  This is covered in one of the FAQ posts, along with many other useful things: https://community.smarty.co.uk/t5/faq/sim-and-device-help/ta-p/28

Just ask for a replacement SIM card, BrianHe_1652664. 

See more SIM stuff online at https://community.smarty.co.uk/t5/faq/sim-and-device-help/ta-p/28.