Unresolved query

My virtual card was blocked when I am trying to use it I got an SMS saying I must call this number ***I have called this number for 5 times. The first time I was assisted by someone by the name of Thabiso he tried to assist but unfortunately the network was bad on my side I said I would call back. When I called back I was on the phone for over 15 minutes the guy that was assisting me said that someone will get back to me and they didn't . I called again the girl answered she said that she was looking into my query and the next thing she dropped the call. Worse part she is not customer sympathetic I hate her tone she doesn't have patience. Why was I advised to contact this number is the agents are useless and cant assist me with my query mxi 😡😡