Not taken seriously. Triggers trauma flashbacks

My phone was ****** Friday, been calling MTN to blacklist the phone. First I can't get through to blacklisting department then hours later when when I get through I'm told that department is closed for the day. Saturday I call the customer care centre again I get through after giving my details, the agent is quiet for a while phone call still active then few minutes later the phone call is cut. I tried several times to get back to call centre when I finally do the agent, I give my details again and told phone has to be whitelisted first and I have to call after a few hours to blacklist the phone. I'm crying, hurt exhausted as I write I don't know what to do. The traumatic experience being attacked, having to suffer for items I bought now this simple blacklisting process not taken serious. I want to die.