cash back

I'm with hollard for 5 years and was promised a cash back of 20% of my premiums, I was supposed to be paid on May this year but they told me only in August. I phoned on the 4th September to re-apply again and was told they will get back to me within 48 hours but they didnt, Holland is not loyal to it's client and doesn't keep their promises. You have to hassle before you get what is due to you.