Caltex kempton car clinic

I refilled fuel on the 29 th of April at Caltex kempton the money was debited on my account but on their card machine it showed that the transaction was rejected then we went to the. Manager wlhovtold me that I must swipe against the money will be reversed back to my account up to today I ve not seen the reversal .I been trying to call them to get the clarity but seems like their phone is not working