Double deductions

Good day

On the 1oth February 2018, I used my credit card to transfer money via Tabonline direct/credit card option and the payment system was done. Very attempt that I made to transfer the money it indicated that the system is unavailable. Today when I check I find that Tabonline deducted R300 in my credit card and only recorded one R300 and the other R300 not recorded. Kindly call me to resolve this matter.