I have no mobile signal inside my house and in many areas across Birmingham. My contract with iD Mobile is ending in 3 days, but I understand I may still be charged for another month.

I want to leave the network today, as I am not receiving a reliable service. I do not understand why I should be required to pay for an additional month when there is no signal or usable service.

Please explain how I can properly end my contract immediately so that my SIM is cancelled and I am not billed for another month