Are over charging me $150.00 a month on my escrow ...

Are over charging me $150.00 a month on my escrow payment. Sent them in the documentation to change it. The admit receiving the documentation but decided to not adjust my payment amount. Essentially saying that they are going to continue to over charge me until my review period in February. Told them that I'll make the change for them, at which point they said they would charge me late fees and I would be in non-compliance. Worst mortgage company out there.