Dishonesty and bad customer services

i have been with Discovery vitality over a year now, my suprise is that today they decided to sent me an email notifying me that my Vitality was cancel on the 31 of march 2018 . i don't know what kind of the business are runing guys you should have notified me the day you did not received the payment and you decided to tell me now, now i have forfeited all my cash backs and i need to pay other money to activate my rewards this is very disappoint . i don't want to do any business with you guys not now not ever.