Shoppers stop Inorbit Malad West - Emberrasement at security

We made a purchase at Shoppers stop - Inorbit Malad outlet on **th sept **** in the evening.
*. Cashier did not remove security tag. Bill no ***** register ** date **.**.****
*. Hence we were stopped by security and we were thouroghly checked. Removing all the items. We were emeberrased by all this.
*. Due to the fault of your cashier, we were penalised.
*. Same was complained in writing on the same day at the cashier counter.
*. Copy of complain enclosed.
Now we have following querries,
*. Why it happend at the *st place.
*. What action was taken on the written complaint dated **.**.****.
*. What corrective measure you are taking.
*. How are you going to compensate for it.