Request to remove comment of phone number

i received a call from this number +1631443200 around 1600hrs. I was registered in canadian visa expert yesterday. I talk to Ms. Karen and Ms. Jenny Morsen this afternoon.They interviewed me and ask me to pay 525 SGD to the lawyer who can assess my papers to work as a caregiver. I give my visa card number without thinking of it...lucky i dont have money in my card. now i realized why i give my card number....Im on doubt now i check in the internet this number, i saw that theres a lot of comments.Now i should do sumthing about my visa card that i gave to them.