Oneplan Pet Insurance disappointing

I wanted to sign up online with Oneplan for pet insurance, but during the process, I had a question that I needed clarity on before I could join. I tried calling their contact centre, but every single time the call was cut while I was on hold. I sent multiple callbacks to no avail. Eventually, I had to connect with them via WhatsApp and requested that someone call me back, which is what happened. The agent answered my questions and stayed on the phone with me while I completed the online form. At the end of the sign-up, and after completing my banking details, the final page confirmed my monthly premium would be R730 (which the agent also confirmed) and that a pro rata amount would be deducted within 72 hours, as I wanted the insurance to begin immediately. When I received my policy, the monthly premium is now R760,94?! When queried, they insisted that their pricing on their plans is an estimate! However, I sent them a screenshot of that last page that confirmed the premium of R730 and asked them to listen to the call with the agent who herself confirmed this R730. They reverted and advised that the call does state R730 and that they will investigate and revert. To date, I am still waiting!!! Their customer service is shocking! Signing up online for one amount and then blindsiding the client with another amount on the actual policy is also worrying. What is going on Oneplan? I asked for this matter to be escalated, but I still have had no feedback