It is a scam

Recently I ordered a ring, From FRAUDULENT Z4 DIAMOND RING.  On TV, and in the banners displays in the website it says  RING $20 dollars, plus $6.90 Handling and shiping, and a ring band for additional $6.90, if you add the numbers the total is $34.00 dollars. But in the bill they do not allow to see before ordering, it says ring, $29.00 the price desonestly increased from $20:00 to $29:00 dollars, the band fom #6:90, to $16.00 dollars, so they ended taking 53:00 dollars from my card without autorization.  fraulently they take 20 more dollars increasing the prices and the deal they show to play scam on  honest people. And I do not know what else they will do with my credit card. Mary V.