hey, can rhb cc cancel by calling customer service? or kiosk ( at tesco )?

i been charge RM50 for gst.. so i call to cancel..
they say will waive if i spend 3 swipe within 1 month, i say ok and swipe the 3 time, they refund back the 50 and i use up the 50 again and i call to cancel again

now they tell me.. becoz we waive the RM50, u MUST continue use 1 year.. i like WTF u say 3 time i get back the 50, now u say i cannot cancel? so after 1 year kena gst again and forever cannot cancel..

i got so angry.. i tell them i WANT TO CANCEL i DONT CARE

they say: ok u can cancel but we will charge u back the 50. really fakkup..

i say go ahead and charge la.. i wan to cancel no matter what..

i will just payback the RM50..cancel and forget about it.

previous i cancel time i say i will pay the RM50 and i wanna cancel.. the cs say just swipe 3 time and u can get back the 50.. didnt mention need to wait another 1 year..

previous, they charge me RM50, i call say i wanna cancel.. they say i got outstanding( RM50 gst), ask me to pay 1st and will rebate to you after 3 time swipe, and ok lo.. swipe lo.. and they rebate dy, (extra RM50 after rebate in my cc)
i call again, say ok i wan cancel.. RM50 is CR, they cannot refund by cash to me so i cannot cancel.. now i use up all the waive and 0 outstanding and they telling me this

Just cancel and pay up the RM50. waste my time only

hi, i have cancel my cc few month back and they say they will cancel it..
however, i dont received any letter of confirmation on the cancellation and my online account still showing the cc

is this normal? should i treat as ALREADY cancel? i try to call the cc center but getting busy line. so anyone have this experience please share