Absa credit card oveline problem

<p>Paid R6000 from my savings over to my credit card account with ABSA and now the money is available but says overline. I filled my car with petrol and only then to be told that the card declines. What an embarrasment. Ive been banking with Absa for over 20 years and this is really not nice. Starting to ponder if I shouldnt change banks.</p>