Disabled pensioner - no grocery delivery

I am a disabled pensioner who plans in minute detail. I order according to when I have assistance. I organised a delivery for 10 am - 10:30 am. I waited and then 2 hours later got a phone call from Cape Town (I live in Port Elizabeth) to say they had to cancel my order due to 'technical' difficulties. I am now without groceries, and there are no available ones anywhere on the website. You, PICK N PAY have lost a long-time customer