Sony India — Sony Show Anna Nagar Chennai Charged me Rs 4100 extra on 65 inch OLED TV

Dear Sir,
Sony Show Room Anna Nagar Chennai, confirmed me cost of TV Rs 235000 and requested to pay Rs 5100 and balance Rs 229900 as finance.But Bajaj Finance have put Rs 234000 has finance and charged me.
When i have gone back with the show room and asked for the balance fraud amount charged with me they are not responsibly answering me on the same.
Name of the executive:Mahesh from Anna Nagar Branch.

Never expected such a worst behaviour and Fraud way of collecting money from customers without informing the breakup.
Need to undergo severe action on such showrooms