95558 is a national service phone, and you can dial it in the M-Zone, but the local China mobile or bank may have set the area code, so you can try to dial the local area code in Jiangsu before 95558.
For example: Changzhou 51995558, Nanjing 2595558, etc.
If you know the password of the card and just want to modify it, you can modify it on the telephone, certificate online banking, counter and CITIC self-service equipment in the same city.