connectivity error

I have had no joy with the vodacom's customer service. I am having difficulties with my VPN (which is my employer's responsibility) but our IT manager informed that vodacom needs to fix something on their side so our IT can be able to connect me to our VPN, he even wrote a motivation letter to explain what the issue is, but every time I call vodacom, the consultants are quick to say there's nothing they can do since the issue is VPN. Can some senior IT person contact me so they can have contact with our IT so this back and forth can be resolved.