false migration package

The migration department is the worst, i have recently migrated my two lines to a different price plan but the issue is my other lines migration was due told false information from the consultant, he had said i will be saving R70.00 if i migrate the new price plan. but now i have just received my invoice and im not saving anything infact im paying more, and on top of that i did not receive any quote on that number. I'm now stuck with airtime worth R655.00 on both 2 lines combined, what am i going to do with that? i have 3 lines with you, recently upgraded one, if this is not resolved i will have to rather cancel my contracts. I spoke to one of the consultants and i was told im gonna have to pay a fee to cancel the migration, I'm gonna need you guys to listen to the recording of the call before telling me im gonna to pay.