Netcare Plus - Hollard - Accident and Trauma line not working

Signed up for Netcare plus policy, accident and trauma cover, underwritten by Hollard. From the 19th July 2022 I have been trying to get them to change bank details on my policy, as we cannot go without it. But many emails and phone calls have gone unanswered. So today I was trying to follow up again to try and resolve this, as I was promised by agent last month that it will be resolved and I would receive a call the next day from someone in accounts to confirm. Still to date nothing, I tried to call the supp**** number to get a message that the number I dialed does not exist or is incorrect. I tried emailing, but no response, then I tried something else. I put my details on the contact me page, for sales, and low and behold I get called within 5 minutes, this time by Hollard sales area. Still no response from them on my query, but very quick to sell me something. If this was an emergency, how would I be receiving assistance? Ask for Sales, but sorry they can put you through to the right people.