New account for foreigner on critical s****s work permit

Few days ago I decided to open an account with Edgars but before I did so I called them and asked if they opened accounts for foreigners on work permits and they said they did. So I went to apply at The Grove branch. Lady who assisted me was quite helpful and I left happy with the service given. She said I would get an sms in about 20 mins and I should come back. This was on Tuesday. No message got in, so on Wednesday I called the new accounts department and I was told they are not allowed to take ID #s over the phone and I should go back to the branch. But I felt that was an inconvenience especially if I was just going to be told my application had been denied. So I sent a message on their Facebook page and got a reply asking me for my ID # and they said they had escalated the matter to new accounts gave me a ref number and said they would be in touch. Few hours later I got a call from a guy who said he was calling from Edcon, he said my account was not approved because my work permit does not have a stamp and I should go to home affairs and have it stamped. This is my second Critical S****s work permit and both of them came with no stamps but just a signature from the HA director. So I was confused by this, I called back later and asked for an explanation and the person I spoke to said I should go back to the branch. Which I did few hours ago and the lady who had processed my application said she had actually followed up that morning and was told the same thing about the stamp and was also confused about what exactly they meant because work permits don't come with stamps on them. I'm really annoyed right now because the person that's dealing with my application either doesn't know how a work permit looks like or they are just trying to make things difficult for me. I already have an account with Mr Price and my work permit worked fine opening that account.