BP Loyalty Program bad faith. Don't bother as they NEVER have stock

This is actually for the BP loyalty program. This is simply a warning for other loyalty program members. Don't go out of your way to fill up by BP as I do. I currently literally live around the corner from another service station but go out of my way to put fuel in by the service station in Three Rivers Vereeniging. The only reason I put fill up there is for my grandson who nags me to go there as he wants the little dinky toy. The things we do for our grandchildren. I qualified for a free dinky car on the 15th of August already. I have been back numerous times since then, but they never have stock. Eventually on 27 August I called the number on the loyalty card and spoke with Noeraan @ 13:44 and explained the situation and asked why Three Rivers BP never have stock. (This happened last year as well. BP Three Rivers NEVER have stock.) She asked which one and we identified that it is the one in Three Rivers Vereeniging, took down my details, promised to call me back. Today is 2 September and I yet have to receive a phone call from her.... So, this is the treatment one gets for being LOYAL. I get that they could possibly have run out but why not call me and tell me. Secondly why do I get repeated text messages from BP asking me whether I have lost the code and proceed to give the code again. If you have no stock, then quit for the texts. I do realise the T''s and C's do not guarantee a little car but then at least stop sending the texts as that is simply bad faith.