Woolworths blocked my account because of R45 owed for 3 months card protection. Been client for over 30 years. I had no warning

Ive been Woolworths account holder for over 30 years. I love their fresh produce. I’m 70 and husband divorcing me. I’m living on bread and yoghurt. On my last trip to city I decided buy fresh produce on my account at Woolworths. Was horrified to discover my account was blocked because I owed R45 for card balance protection. I received no warning this would happen. Vincent park staff were incredible. They tried their best. I paid R45. My account unblocked. But informed to come back next day to do my shopping. I couldn’t do this. I dont live in East London. I couldn’t afford fuel. I’m bitterly disappointed and heartbroken.