Then as process of elimination your SIM card has either failed or your account needs resetting. Have you managed to try another SIM card in your own phone to see if it's working on.
Any Vodaphone High Street Store can simswap for you which moves your mobile number and tariff to a new SIM card or call customer services to have one posted and use the sim swap link to move them across yourself -> and calling customer services and asking them to reset your account may help.
Current Phone >
Samsung Galaxy s²⁴ Ultra 512gb.
