FNB keeps putting my account on hold

I am so sick and tired of FNB, they keep putting my accounts on hold its happened 3 times now they freeze both my Cheque account and Credit card. This is so inconvinient, I am travelling today and I cannot even proceed with my trip because I cannot transact. They say its a KYC problem and I must send my ID and proof of address and I keep sending this stuff yet they keep blocking my accounts. This problem can apparently take up to 24hrs to rectify and I am beyond disappointed with FNB, i have been with then for 5 years now and I have always felt they were good to me althogh I have had a hiccup or 2 with them but I dont know what is going on anymore. I keep asking myself what will happen if this happens at a really critical moment and I find myself stranded because they dont even give you any warnings before they put the accounts on hold. I am so upset and this was the last time I go through this, I am closing all my acconts with them and I am moving to another bank, this is absolute madness, I cant believe they treat their own clients like this, the very least they could do is atleast notify you before they just freeze your accounts like that, i am so irritated!!!