First, tell him you are having trouble hearing him so he needs to get off speaker. Second, go one week without responding or acting to the way he speaks to you. If you still consider it harsh then talk to him about it calmly
M 37 W 30 S 7 Together 10 years Married 9 years BD: 12/12/12(W filed same day) I moved to apartment 1/11/13 W and S moved to MIL 1/11/13 Peicing: 6/3/13 Reconciled: 7/2013 BD2: 4/20/16 still working on it