A Reward Stars

I received an email today telling me about my statement as at 19 November 2017. I then noticed that I have 3312 Stars and the card status is silver. I decided to call the call centre so that I can clarification as to how the stars work. I called the call centre at 11:55am and the lady I spoke to said that I only have 859 stars not 3312 stars. I told her that the email I received says that I have 3312. she then said that a customer only qualifies to buy on stars if they have 2000 stars and above. I was disappointed because I was given false information on the email I receive. I need to use my 3312 stars before they expire because she also said that the 859 stars she claims I have will expire on the 31 December 2017. I need ackermans to recify this and allow me to use the stars I have 3312. my account number is 6 ********** 5 **********