@SophiaE_1274576 This suggests that your previous sim is still active. It would only deactivate after six months without being used - was that the case?
Assuming that you still have the old sim, you can purchase a plan and use it. If you have lost the sim but still want the same number, you can report 'sim out or stolen' and you will receive a replacement that then needs to be activated according to instructions supplied.
