BAD CUSTOMER SERVICE FOR A REVERSAL

There was an online purchase I made on 28/12/2015. there product was advertised for R498 however an amount of R2415 for Garcinia was reserved on my FNB account. I did call the account queries department asking them to reverse that transaction of which was advised I need to complete forms and wait for 10 working days for feedback. I need this money for school stationary I can't wait. If Nedbank can do immediate reversal for a debit order why can FNB not do this. I did not need to fill in any documents with Nedbank. Your service at FNB is inefficient. I would like urgent feedback on my reversal