Vishal Mega Mart — Misbehave with customer

Address: Jabalpur road katni

My parents went to vishal mega mart located in Jabalpur road katni as they usually visits every month. Today they billed what they purchased in counter no 9 with bill no[protected] made be 6053851 shahin parve timing 20:14:53 on 12-Apr-2022. It was summaries as 42 items with 55 quantity. All the items was in the cart and handed over to the person making bills. But accidentally he forgot to take out the slip of one item but added in the bill and pack all the items in the bag taken by us. During exit crossing the gate hooter sound was made due to that slip which was not taken out by the person making bill. But the guard and the whole staff humiliated and insulted parents without investigating and finding the problem. later on after several request they recalculated and checked every item and found that it was the mistake from their side only. at last they didnt provide the offer which was on the billing amount. Moreover they were rude at the end too saying its a mistake from your side as you have to check the same. Is this the way one should treat the customers like this??? my parents were educated and thus too felt so embarassed what they do for the people who are less educated. i request a sincere apology from the staff to my parents as it was a full mistake from them. my parents were cooperative still your staff were harsh to them