Poor Service, miss leading, too expensive

I have been a member of the Momentum Short Term Insurance group for more than 6 years and it is very disappointing when you are informed that you do not qualify for a no claim bonus after having not claimed in all these years. It states clearly on my statements that after 4 years of not claiming you are entitled to 15% cash back no claim bonus. I made enquiries regarding what is due to me and I have been advised I did not have this cover and yet it appears on my statement. I do not recommend using this insurance company.