Rude call centre agent

Tonight I was bombarded with missed calls from your *** number. The guy who was on the other line proceeded to go through confirming my details for a credit card application, which Absa had already told me I was approved for. I told the guy I was unable to talk at the moment and aggressively explained to me in a way that this was of the utmost importance and couldn't wait to be sorted out at my convenience. I did not approach Absa about this credit card, and I will not accept Absa's staff's attitude!