Keep a record of the transaction: Having a digital or paper copy of large transactions can help you if you do need to make a return or contest unauthorized charges made to your account.
Weka rekodi ya ununuzi: Kuwa na nakala ya dijitali au ya karatasi ya ununuzi mkubwa, kunaweza kukusaidia ikiwa utahitaji kurejesha bidhaa au kuwasilisha malalamiko ya ada zisizoruhusiwa zilizotozwa kwenye akaunti yako.