*********** Sales staff at Cotton On

I have been to various Cotton On stores and the most recent was "Eastgate". I find it both very frustrating and annoying that EVERY sales personnel at the counters cannot process an account transaction under "6 months NO interest" despite communicating to them that that is the payment option I prefer. I have previously had to return items and waste my time just so that a store manager can reprocess my account transaction under the correct payment plan. Is there no training in place for the staff that they cannot action the task correctly? Why offer this option to customers if Cotton On staff themselves cannot process it correctly or is it a scheme to ensure that Cotton On receives more revenue in interest by omitting this task or are the staff *********** of understanding the request? Will the interest I am currently incorrectly being charged be refunded back to me based on the incompetence of the staff for failure to adhere to a verbal customer request? I await your feedback!!!