premature cancellation of credit card

I would like to lay a complaint against ABSA card division for being very unprofessional, last Saturday (25/02) DSV couriers phoned to say that they wanted to deliver my credit card sometime during this week, I asked them to deliver it to Middelburg Mall ABSA branch. On Wednesday after refueling my car my credit card payment was rejected on 2 occasions, thankfully I had a 2nd card as I do not carry much cash. I then tried the card at a different cash point to have it rejected again.On contacting the help line they told me that my card had been cancelled due to the contract with Mastercard terminated and ABSA now deals with VISA.I would like to know the following1. My card only expires in 06/20, why is it being renewed now?2. Why was my card cancelled before my new card was issued?3. The DSV courier returned my card and did not deliver it to the branch as requested, only after intervention will they now deliver it today4. Why did DSV return the card to card division and not deliver it to the branch as requested?I am travelling overseas on Sunday and if I had not used my card on Wednesday I would not have known that there was an issue, this issue is frustrating and annoying, however on a positive note the person from help desk has gone out of his way to ensure that I get my card today and has contacted me 3 times since Wednesday to keep me up to date with progress