Ebucks Engen rewards - Poor communication

Super disappointed in FNB Ebucks. I couldn't understand why suddenly I am getting 0 rewards for putting in my fuel at Engen as I have always done. I finally remembered to call them to check why this is. My statement shows my almost R4k fuel contributions with a 0 ebucks allocated balance. The agent I spoke to then tells me that from the 1st of July 2020 I have to now register my car under Nav-Car in order to earn. I don't recall seeing any communication but apparently it was sent. When I go search for this message that was sent, I see it was at the bottom of the message I always see about "you paid x amount when you could have paid with ebucks, please note to earn rewards blah blah.......". I ask you with tears in my eyes, when I pay R399 Private Bank fees, is there no agent that could just pick up a phone to call me and tell me that I need to register my vehicle with Nav-car to earn. Or what about my Private Banker giving me a call or sending me an email to advise me of this. It becomes harder and harder to earn. I question your loyalty to your loyal customers. I upgraded to Private Banking to earn more eBucks and religiously spent on my credit card every month and fill up at Engen, nowhere else and they could not just let me know. I am extremely disappointed to say the least.