car is broken

Today I noticed a small puddle under the car, and it looked kinda dark brown so i thought it was an oil leak. I looked up oil leak online and it didn’t seem like a big deal, but also not something you’d want to leave for long, so i took it to a repair place. Turns out that it’s a gas tank leak, which is more expensive, and much more serious. Now we have to decide whether we want to spend about 1.5-2k on repairs, or junk the car and get a new one. I’m kinda freaking out and my husband’s not answering the phone. Cats are worried about me but don’t know what’s wrong, and can’t really help with this.