Horrible accounts department

Two months ago I changed my bank account. this seems to be an impossible thing for afrihost to understand. After a manager in accounts department shouted at me and my husband she confirmed the new account has been captured and verified. they now cancel my service because my account according to them does not exist. this is the same account various other debit orders goes out of and which clients pay money to on a daily basis. the same account I made and eft to afrihost from. whenever you need it to be fixed they just tell you they are offline. I am moving my hosting immediately.