Hi Nici...
Suggestion. Do you feel guilty if he called and you're not home? No, right? How could you talk to him... you're not there. Okay. Next time he calls and you see his number on the ID... walk out the front door and stand there until it stops ringing. Say over and over "I'm not home. I'm not home."
The first time you don't answer when he calls will make the next time easier. If you're nervous... tell a friend the plan... get them to call you and do a dry run. I'm absolutely serious. Rehearse.
Your dad eats franks and noodles because he spends his money on alcohol. That is his choice. Me, I'm all for letting them get good and tired of franks and noodles.
Hugs!
Smoke