Get your taxes done using TurboTax

I received a stimulus payment yesterday of $1200 dollars, which is wrong. My husband and I are below the threshold and should have received $2400 dollars. I am curious if a different amount will be deposited into his account because he receives social security? We filed our 2019 taxes already and received our tax refund, while I am listed as the head of the household. We also filed jointly. So, I am not understanding why we did not get the full amount. We have no children to claim and we are well below the threshold to meet the requirement for the full amount. I have searched and cannot find any way to contact the IRS about this situation; though I have found articles saying that if the stimulus payment is incorrect then the person is to contact the IRS immediately, which is senseless when there is no information made available to contact them.