Renewed documents on old contracts required

Wesbank suddenly wants documents given to them three years ago again. Hiding behind FICA they now want the same documents but in current format to ensure money laundering does not happen. How is this applicable to contract that has been running for three years? Wesbank has surely got to think that this is normal practise to harass their clients to try and achieve what? Snake in the grass here....maybe they want updated information to sell to clients etc... FICA requires Id, proof of adress and income at the time of purchase on contract not a renewal after three years so what is up at FNB?