TAP FACILITY - DANGERS

I am appalled and concerned that Discovery Card permit a tapping facility up to an amount of R 500.00 , without the need for any security procedures . I am told by a Discovery employee that that is what Visa want ! Sure they want it , any theft and ***** earn revenue for both parties I suspect at the Customers expense ( literally ) . I have tried unsuccessfully to stop this facility , am told that I cannot ! I cannot establish from Discovery how many *****ulent transactions will be permitted up to the R 500.00 limit , could be many , that will be charged to the Customers account and then queried ! Rather worrying circumstances . When objecting to this , I received incorrect information , my instructions were not carried out and no employee from Discovery contacted me to advise me of the continuing risk ! But Discovery were very helpful in advising me on how they can assist with closing my a account ! I shall refer this matter to the banking Ombudsman