Radisopick They deducted monies from my account without authorisation,twice. Sao Paulo Brazil

On the 22-11-17 Radisopick offered a new iPhone for $1. I entered thinking maybe it was a scam but only riskiing one dollar I thought it worth it.

On the 24th of November my money was put back into my account and all was forgotten.

On 29-11-17 , $61.07 was taken from my account, plus $1.83 international transfer fee, this was not authorised.

On 29-12-17, $61.36, plus $1.84 international transfer fee was again taken from my account.

I did not notice the first transaction on 29-11-17 which is why I suspect tha second transfer occurred.

How can I get my monies returned. I am a pensioner with no income.