Naturals — Not accepting to use service of Purple card membership

Website: www.naturals.in

I bought purple card membership by paying 500 rs in naturals on 7/9/19 and it's validity is 2 yrs. At time of purchase, manager in Triplicane branch said that I can avail service for rs 500 at end of 2 yrs validity if I'm not going to renew it. Now when I visit Branch and ask about it, they are denying that offer is no longer avail and we can't provide you service for that 500 deposited amount. This is completely unacceptable. I need a proper solution for this. Either they should give me back my Rs 500 or they should provide me service for rs 500 since each and every penny matters