Instead, the 42-year-old from Voronezh, Russia, scanned it into his computer, altered the terms and sent it back to Tinkoff Credit Systems.
Mr Argarkov's version of the contract contained a 0pc interest rate, no fees and no credit limit.
Every time the bank failed to comply with the rules, he would fine them 3m rubles (£58,716).
If Tinkoff tried to cancel the contract, it would have to pay him 6m rubles.
Tinkoff apparently failed to read the amendments, signed the contract and sent Mr Argakov a credit card .
"The Bank confirmed its agreement to the client's terms and sent him a credit card and a copy of the approved application form," his lawyer Dmitry Mikhalevich told Kommersant .
He could afford to buy an island somewhere in Malaysia, and the bank would have to pay for it by law.". »