Unauthorised deduction

My wife took out a contract and one of your consultant called her about migration story and stated that her premium wont increase, to our surprise the instalment has since increased from 669 to 995 and when we contact customer care we are told that we cant reverse the migration. Please assist as soon as possible or we are taking these through to ombudsman. These is *******. These is utter bull**** or the next debit order we are reversing it and only paying the agreed instalment of 669. Please teach your employees to be very transparent and not chase sales by all means at our expenses