I totally understand that money is tight right and I really want to help you out to make an extension. Having service is important and I want to do everything I can to help. Do you perhaps have an option to connect to wifi? Cause if yes, especially if you have it at home, you can also make use of that for the time being to connect with data or use wifi calling option on your phone if possible. You can also use messaging application like messenger, whatsup or hangouts to send a message since those application can be use thru wifi. Hope that information helps.