Standard Bank offline/no service

Trying to pay at Spar for the past 30 minutes, the card machine keeps showing declined, but the transaction goes through on my bank for both debit and credit card. Finally had someone bring me cash to pay with. Now 2 hrs later its still showing as 2 transactions that went through on the mobile app. This is not the first time that Standard Bank has let me down at a till. They seem to be offline a lot, which was confirmed by the store manager. This also happened to us overseas where our cards did not work for 2 days. Trying to reach anyone at the call centre is near impossible, we had to hold the line for more than 60 minutes to get through, only to be told to call another department. Lastly, don’t bother paying extra for prestige banking, I’ve been trying to get hold of my personal banker for the past week to no avail. Waste of time and money. I’ll be shopping for another bank who is interested in handling my personal banking, investments and home loan.