DOUBLE CHARGED FOR CANCELLED BOOKING

I made a booking through CarTrawler selecting pickup and drop off in Randburg.<br> In receiving my booking confirmation, I saw the pickup and drop off was changed by CarTrawler to OR Tambo - there was no ways I could get there.<br> I immediately called to cancel the booking, which was successful and I received an email confirmation.<br> I then went straight back online and made a new booking collecting from Lanseria (closer where I was able to get to) - quite pleasant and booking was hassle free.<br> A few weeks later, I check my credit card statement and see that both CarTrawler and the car hire company (Budget) have charged me for the successfully cancelled booking - double charged for a car I did not rent or pick up (CarTrawler changed the booking without my consent) .<br> CarTrawler say they can't refund because I cancelled directly with Budget - Budget said I had to cancel online through them - which I did.<br> Both have charged me which is the second problem - neither will refund each blaming the other.