Extended warranty **** for car finance interest

Warranty *******, they added a warranty immediately after a call on my car finance while I have a warranty with them and ended with 2 warranty. which I noticed and called them to remove it same week. now I've been paying for the canceled warranty for the 2nd month, no one wants to remove it. I called even tried their social media sites without any help. they took an hour to add the warranty but taking months to remove it while adding interest on my car finance. **don't take MFC extended warranty****