Who I have the same questioned this topic

My phone was no longer available to me, and the line was suspended. I received a new number, and a new phone. I have since recovered the lost phone, but for various reason I need to keep my new number active. However, I have email account passwords that require texting ability on the old - not suspended line. Is there a way that I can temporarily re-activate my old line, get the password texts that I need, and then deactivate it again - without incurring penalties or extra costs?