Migration Fee

During the month of July i was phoned by Vodacom consultant advising me that she wants to change my plan as i am paying a lot of money when phoning or using data to a plan that i will be paying less for the calls and data.My plan was smart S+ and she migrated me to top R350.00 and i realized that the top up plan is airtime only and was not happy at all. I phoned Vodacom expressing my dissatisfaction with the new plan and they migrated me to my initial smarts + plan,now they are charging me R 800.00 migration fee for that transaction and i want to indicate that i am not at fault.I request that the R 800.00 be s****ped out from my invoice as this was not my fault. The consultant who migrated me to top up didn't tell me that i will only get airtime and will no longer get my 500 MB and 200 sms. Assist please