DISPUTE - PRICE TAG Recommended Price (VAT inclusive) - Charged Differently at till

My recent purchase at Woolworths, has a descrepency, i would like some clarification on. I have submitted my Email on Friday 6th June and again this Morning 12th June 2018 regarding a difference Charged at till. I am aware of the 15% Vat Increase, but was Charged eg. Ruched Loopback R399.00 (Price Tag) ********** 963990 ********** 92 Charged R402.50 at till. Navy Medium R299.00 (Price Tag) ********** 530765 ********** 88 Charged R301.62 at till. This dispute in calculation has been charged the same on all 6 items purchase The Price Tag specifies Recommended Price (VAT Inclusive) and the Till Slip Specifies the New Calculated Amount and below 15% Vat Total All i require is an explanation but NO CONSULTANT HAS MADE CONTACT, or a confirmation email, matter is being attended to. Please make contact urgently, via your customer care compliants department. This has also been escalated to the CEO Zyda Rylands