Handling fee!!!!

<p>I bought a cellphone from Dion Menlyn mall and the same day the phone started freezing /restarting on its own.I then decided to take it backtback the following day for a check.after the technician checked the phone but couldn't find any fault,I decided I should rather get a refund cause I was no longer Happy.after some long discussion with the sales manager he decided I was gonna give me a refund however I will be charged a 10 percent handling few as per CPA.i asked him to show me this in writing but one of the sales ladies told me to check on Google.i believe I should have not been charged the so called handling few.</p>