If assessee does not receive any intimation from the CPC Bangalore u/s 148 or 153, then what is the procedure to contact CPC for refund without any reference no.?

If assessee does not receive any intimation from the CPC Bangalore u/s 148 or 153, then assesse needs to dial toll free number 18004252229 or paid number 080-22546500 and after the call is connected- Press 9 to speak to CPC executive on the IVR response.