FNB BUSINESS ACCOUNT GOT POOR SERVICE

I lose my client because of FNB and their bad service, I app**** business account online I sent everything they wanted they sent me sms to collect the card at the branch I went to the branch with all documents that I send a lady at the branch activate the card and the banking app n they told me to wait for 3 days after 3 days the account still on hold and when I call they tell me within 1 hour it's going to be resolved I guess R500 airtime was gone n now my client can't deposit 300k on my personal account until today they called me and canceled the order just because of useless Fnb still now the telling me to wait another 3 working days wich is not on black and white it's not on terms and conditions I don't know how do they draft policies verbally not in writing that's a bad service