credit card online banking

My Absa credit card is blocked and the Branch cant assist with regard to that .I was referred to contact authentication department on *** but I am getting different information from consultants still no solution. It is ridiculous that one consultant said I must always have the SA cellphone number in order to do my transactions abroad.Imagine if I have to do roaming for years in order to use my credit card online.the other consultant says I have to use someones SA cellphone number and get my password from them in order to process my transactions.I don't think anyone knows what needs to happen here.my sister has been at the bank from 9h00 to 12h15 and still no assistance its frustrating.I don't have this problem with the other financial institutions but Absa bank.