make life miserable for (one)
To cause one to be continually unhappy; to be a great and continuous source of stress for one. For some reason, the new manager seems to have decided to make life miserable for me. Don't worry, we'll make life miserable for them is they refuse to sign the contract.
make life miserable for someone
to give someone misery; to be a great nuisance to someone. This nagging backache is making life miserable for me. I wish you would stop making life miserable for me.