Hi
There are always recourses for this sort of situation, first off i reccomend you contact us and tell us that you want to raise a mis-sale,
I myself work in the technical team and am able to raise these, so do not allow the agent to pass you to sales (Tell them that you want to raise a mis-sale through our Issue Management Portal.
The best way to do this would be to contact us in wrinting either via our email or livechat team, you can reach them here
This can take a bit of time to go through but it will ensure that the manager of the agent who has told you this will pick up your issue
I hope this helps
Burkem5