Dutch health insurance

I have a Dutch health insurance and would like to change to another insurance company. How can I arrange this?

What is included in the basic Dutch health insurance package?

Are there different health insurance policies? And what is the difference?

Is dental healthcare covered by the insurance?

Can I get additional coverage for my health insurance?

How will my children be insured?

If I don’t have a Dutch health insurance policy yet, is there a way to get my medical costs reimbursed?

I just took out a Dutch health insurance policy but now the insurance company wants me to pay the premium for a few months retrospectively. Can they do that?

What will happen if I don’t take out Dutch health insurance?

Is there a deductible (eigen risico)?

Can I use my Dutch health insurance abroad?

My residence permit has expired and my application to renew it has been rejected. Can I still get medical help here?