Tracking down my petrol card

I ordered my petrol card around the 12 October 2017 and was told it will be delivered 7 days later. a week later I was still awaiting delivery of a petrol card so I contacted the call center and after being pushed from pillar to post I was finally told that even though the petrol card is linked to my cheque card I need to speak to the credit card department. The call center agent at the credit card division assisted me and I was informed that the credit card was at the courier and will be delivered. I contacted the credit card department today (26 October 2017) and spoke to the call center agent, she informed me that I need to talk to the cheque department because the petrol card is linked to my cheque account. I informed her that I was told by the previous call center agent I spoke to a few days earlier that even though the petrol card is linked to my cheque account it is still handled by the credit card department. The lady denied this and insisted that I need to talk to the cheque department, I told her that if I get told by the cheque department that I need to talk to the credit card division I am going to be angry and lodge a complaint. The call center agent patched me through to the cheque department and when I spoke to the call center agent at the cheque division she told me to contact the credit card department after which I expressed my intension to lodge a complaint, I requested the complaint call center number and when I dialed the number that was given to me it said the number did not exist. Personally, I have an excellent experience with FNB and I have been treated well. This is the first time I am lodging a complaint but I am frustrated. All I want to know is where is my petrol card and why is it taking longer than I was told when I app**** for it and no-one seems to want to listen to me or assist me at the call center.