Hello op.
I work in this industry.
You are doing the right thing.
This type of behaviour reduces confidence in an industry that is already not well trusted.
They lied to you. This is a broker? Go for it. Makes me so angry.
Also I assume you know which insurer the policy was with. It would be worth contacting them and letting them know that X broker mis-sold you a policy and you thought they'd like to be aware.
Insurers are on the look out for this shit and do not want brokers like this on their books.
For those saying no issue.
OP had a policy that was not what she asked for. She noticed. Other people who went through this broker won't have noticed and are not covered for what they thought they were covered for. A proper investigation hopefully will result in them being tracked down and advised of this. If they are 5 years down the line, say, and they get a new policy that is what they wanted in the first place, now, it will be pricier. Hopefully something can be sorted out for them.
Also, and this can happen. Say op got this policy and in the time between signing up and realising it was not what she wanted, found a lump or got diagnosed with something etc. Well then she's a bit fucked isn't she. Getting a new different one could be way more expensive or impossible.
I've been in the industry for 25 years and I say clobber them op. They lied to you in order to get a sale. Knowing they were leaving you exposed. Totally wrong whichever way you cut it.