RCS General Purpose Card still blocked, weeks later

I posted the following review on 24 May 2021 and the account is still blocked and no attempt was made to resolve the issue yet. Highy dissapointed in RCS after being a loyal customer of them for a few years already and always paying the installment weeks before it is due:

"I used my General Purpose RCS Card to make a purchase online at Builders Warehouse on Tuesday, 18 May 2021 at 09:45. I suddenly received a missed call and message that my card has been blocked.

I have messaged customer care on Facebook, but they were unable to assist and told me to send my ID Copy and 3 sample signatures to an email address to have the card unblocked. I have sent the requested document to the email address provided on Tuesday, 18 May 2021 at 11:17. The card however is still blocked almost one week later.

I still do not understand how RCS decided that an online purchase, where I receive an One Time Pin via sms to the number RCS have on file for me, was a possible ********** transaction. I am highly disappointed with the overall way this was handled."