fuel cell questions

Ok so in trying to remove the filler tube to drop my gas tank I ended up breaking the tank where the filler tube goes in.... So get another tank or fuel cell? im leaning against fuel cell for cost but I dont want any gas smell in the car is this a problem with fuel cells? Can I run a fuel cell and mechanical pump? In case you cant tell im a complete noob and need some answers to my dumb questions.
How do you..break..a gas tank?LOL.I think maybe you just broke the seal around the opening where the tube goes in?Can you elaborate more about exactly what you,ve done?