KFC India — order no-3681, bill exaggeration & mis selling

Address:

Kolkata, West Bengal, 711101

This is a complain against staff nozira - kolkata howrah station, we ordered 2 meals as per menu at the counter however
Your staff gave us medium meal instead of the small meal plus she didn't care to ask which drink would you prefer, moreover she did not provide the bill after card payment despite asking her for bill as she had billed 1000 island dip without our knowledge & even after returning the dip she nonchalantly said it is billed for one layer sauce in the meal which i had not asked & she was adamant.
When i assertively told her senior abt exaggeration of bill and concealment of facts she agreed to make up for it with an an order of the same amount & eventually refund was made for the 1000island dip never ordered.
Want an action for duping customers in this manner