Red Card Declined/Completion Rate Dropped

So, I went on a shopping order for Dollar General. Everything is going as it should until the cash-out process. I get to the register and the Red Card is declined. We try 2 more times and at that point, I get on the phone with support. They place me on a brief hold and then tell me to try again. DECLINED. I have the Red Card on my iPhone (which I always use this method) but just to see if it would work, I used my physical card. Again, DECLINED. I called support yet again and explained what had occurred…after them telling me that my card was fine. Again, DECLINED. Now I have been in the store 30 minutes trying to complete this order and 9 declines later. I ask support to please remove me from this order seeing as though they can’t seem to get my card to work. They tell me that my completion rate will be impacted and it was. They dropped my completion rate because THEIR CARD DIDN’T WORK. WHAT THE ACTUAL HELL????!!!!!!! Then support tells me to pay for the order with MY OWN MONEY and complete the order. Um….HELL NO I WON’T. Thanks for the support and penalizing me for your system not functioning properly DoorDash.