Terrible service

I've been having a 4 month long back and forth with vitality over billing irregularities. I have been contacting them every second day trying to get my matter resolved and billing be corrected but instead everytime I call them I get put from pillar to post and have to explain my issue from scratch and the issue has been said to be escalated and a turnaround period deadline comes and goes with no feedback. I keep paying for services that I have no access to due to this.

I am beyond frustrated now.