Discovery Vitaly payment option not fixed

Its been 3 weeks now that I am unable to redeem my rewards with Vitality. Staff does not give any feedback to when or why the function is not working/will be working, and there is no managers present to attend to the issue. I went on Monday 2 October to redeem my voucher for coffee - when the coffee attended just told me that it hasn't been working for days!. Went today 18 October - still not working. Staff seems annoyed themselves for lack of action.