Charged twice

My driver was Lindokuhle Bonga, i did not realise that my trip had saved card payment method then when i arrived at my destination i asked him how much is the ride unfortunately fore the phone i requested with i left it at my house then he checked on his phone he told me it R70 then i paid him cash after that i left today when i am checking my account i saw a deduction of R67 from uber and i was surprised how come i then check my email i also received an email thanking me for a R67 payment from my account for a trip i have already paid for went to my uber app payment method was card so that means i paid double for one same trip please refund my cash back to my account or an uber account because that is unfair