Sirs,
You can file rectification online and it might be that the case is then referred to the concerned ITO. Then it would be too easy to get the refund or get the demand cancelled if any by presenting the certificates received from the bank. Now the ITO cannot deny your claim. Whereas if the case is not referred to ITO by the CPC then you may yourself approach the concerned ITO. It's obvious your client wont go for this and you only have to help him out n represent him before the ITO.
You can file rectification online and it might be that the case is then referred to the concerned ITO. Then it would be too easy to get the refund or get the demand cancelled if any by presenting the certificates received from the bank. Now the ITO cannot deny your claim. Whereas if the case is not referred to ITO by the CPC then you may yourself approach the concerned ITO. It's obvious your client wont go for this and you only have to help him out n represent him before the ITO.