be banging/hitting (your) head against a brick wall

to keep asking someone to do something which they never do.

I've been trying to get the rules changed for years now but I'm hitting my head against a brick wall.

He never listens to me - sometimes I feel like I'm banging my head against a brick wall.

• throw open to
• throw open to someone
• throw open to something
• throw out
• throw out something
• throw out the baby with the bath water
• throw someone a curve
• throw someone a curve ball
• throw someone for a loop
• throw someone in at the deep end
• throw someone into a spin
• throw someone into a tizz
• throw someone into a tizzy
• throw someone off balance
• throw someone off the scent
• throw someone on the scrap heap
• throw someone out
• throw someone together
• throw someone to the dogs
• throw someone to the lions
• throw someone to the wolves
• throw something back in face
• throw something back in someone's face
• throw something into the pot
• throw something on the scrap heap