Smart Shopper points lost without notification

I painstakingly accumulated more than R2 500 worth of Smart Shopper points over 2 years which I planned to buy my husband's ticket to 2018 Comrades with. Due to an injury I decided to buy a vacuum cleaner instead. Before I arrived at the till I went to swop the points for cash & discovered I only had R600. Upon enquiry I was told I would lose the points after a year and that emails & SMS's were sent to me. I received none. When does the year start and end? it's not specified. How can R2000 be taken off in one go as it was not accumulated in one event. This is theft. I spoke to a manager who suggested calling the call centre, which I did but could not get through after holding for a very long time. More money lost. If you check my smart shopper history I keep the money until I have enough to buy an expensive item; >R2000. I want my money back, please. Should I not be reimbursed I will no longer shop at a store that is not transparent or cares about its loyal customers. I will take my hard earned money elsewhere.