Help with twins?

Im a single dad only 20 and i have two twin girls who are each 20 MONTHS. There mother was arrested and sent to prison due to being a drug addict, and not making an effort to change. Well i work and pay for daycare for them, but im getting so stressed out cause the last few days they have each been crying right after i get one of them to stop crying. Its like there messing with me, just taking turns trying to stress there dad out. Im joking, but seriously any ideas on how to quickly stop them from crying.