Local Dental Technicians in Millaa Millaa QLD

I paid 400$ in cash of which is no mention on my receipt, out of 695 $ total , and WAS CHARGED THE THE TOTAL AMOUNT OF 695 $ ON MY VISA CARD. I did not check the amount before putting my pin through.I TRIED TO RING several times, TO NO AVAIL to let him know. HE DOES NOT RETURN MY CALLS.HE, to this date 27JULY-owes me the 400$ ,making no attempt to call me.I will not be cheated of the 400$ he OWES TO ME.