Appalling customer service

On 1 June I called Discovery Card, because the secondary card that my wife uses had expired. The agent told me that the new card had been delivered to us in Feb. Since neither my wife nor I were in receipt of the card, I asked who had signed for it. The agent said he would have to ask for proof of delivery and would get back to me within 3-5 working days (seems to be Discovery's standard, not particularly great turn around time on anything). Needless to say, no feedback. 3 weeks later I call again, and speak to Shrivar, who was helpful, efficient and professional. I asked for the card to be cancelled and replaced. Let's see what happens now.