Baby refusing bottle

I've been EB since my baby girl was born in July but I have to go back to work in October. We've been trying to give her a bottle a day since she was 4 weeks old but she refuses to take them. We've tried lots of bottles and positions but she just screams and cries as soon as the bottle touches her lips. She doesn't even try to latch on.

My freezer is full of breastmilk but what's the point of pumping if she's never going to drink it! I'm afraid I'll never be able to go back to work! So frustrating!