Impossible to unblock a Woolwroths black credit card for online shopping!

Recently I tried to use my Woolworths credit card to buy groceries via the Woolworths app and my card was blocked. I asked in store how to unblock it, They directed me to Absa bank. Absa bank said they said they could only change the pin. So I phoned financials services. They said I needed to speak to Dash help line. Dash online help line said they can not help with credit cards......So how do I un block my woolsworth credit card to buy from Woolworths online.? I still can not get it unblocked because no one in Financial services knows who can help me. I am thinking about just cancelling my card altogether!