A total disaster since their recent IT system update

for the first 11 months everything worked reasonably well,then it all went pear shaped since their recent IT system update. Since then, over the last couple of weeks, their system has refused to recognise my user name & password on numerous occasions. This has resulted in numerous phone calls to their totally ineffective customer "service" dept. Each time I was instructed to change my password / user name-- which I have now done 5 times, and each time this results in me getting into my account JUST ONCE----and then their system defaults back into not recognising me again. It is quite clear to me that the customer service staff are unable to cope with this problem, and the IT system recently "upgraded" is no longer fit for purpose. I cannot see an end to this issue, so I am afraid that after my next statement has been paid, I will be looking for a more reliable provider, and then I will send a full report to the Asda CEO so that he will know how poorly Creation Financial services is administering credit card services in the Name of Asda Money.