Should one use Booking.com?

<p>I booked accommodation with Hotel Diana, Venice through Booking.com. Both the offer and the do***ents returned showed clearly that cancellation was free. I cancelled today and Booking.com again confirmed the cancellation had been made and was free of charge.</p> <p>Shortly afterwards, my credit card was debited with R6797.01</p> <p>The hotel telephone number given on the booking do***ent isi not answered </p> <p>I am unable to find a way to query this on Booking.com's webite and it appears impossible to reach their customer service or any othe way.</p> <p>Can anybody or Hello Peter help me to recover my money?</p>