You should report this to Action Fraud, who deal solely with online fraud. You will be given a crime reference number once you have spoken to them, which you then need to pass on to your bank’s Fraud Team. This link will take you to their homepage: https://www.actionfraud.police.uk/
Alternatively, you can contact Action Fraud on 0300 123 2040, between 8am and 8pm Monday to Friday.
Please then report the deposits as fraudulent to your bank or payment provider, along with the crime reference number. They will be able to cancel your card. It will then be your bank or payment provider's responsibility to contact our Finance Team, who will happily work with them to investigate the transactions.