Indian Oil Corporation [IOC] — Sold wrong product and misbehaved

Address: Samastipur, Bihar, 848115

Dear sir/madam
I asked for Rs 200 petrol at fuel pump Mr Ramesh kr sales boy Sold extra primium petrol to me without seeking my approval for the same and when I protested and ask for a compliant register to write a complaint then Petrol pump manager name Mr Shivshankar threaten me that just leave the place otherwise I will sattle you here right now as we we don't keep any sort of register also I use to see lot of customers like you every day. " मेरे बाप के घर से बन कर नहीं आता है कम्पनी बना के देती है हम इसीलिए बेचते है, जो उखारना है उखार लो, और जल्दी यहाँ से निकलो नहीं तो अभी पता चल जाएगा की हम कौन है" this was the word he used there . Sir i expect a written apology from IOC along with signature of fuel pump owner, manager and sales man of fuel pump in written to be delivered on my address not through post rather I need need directly through fuel owner in my hand on my following address.
Sudhakar Kumar
Vill PO - Malikaour
Pusa
Samastipur
PIN 848115
Phone -[protected]
Email : [protected]@live.com.