If your surname is misspelled on the N1SDT claim form, according to the Civil Procedure Rules, when completing the Acknowledgment of Service (AoS), you should have provided your full correct name. If the claim form contains an error in your name, you should have indicated this in the AoS. Specifically, Rule 10.5(1)(d) states:
"An acknowledgment of service must... set out the defendant’s name in full. Where the defendant’s name has been incorrectly set out in the claim form, it must be set out correctly in the acknowledgment of service."
So, you should have corrected the spelling of your surname when submitting the AoS. If you didn't, you must inform the court of the correct spelling as soon as possible. You can do this by sending a letter to the CNBC, referencing your claim number, and clearly stating the correct spelling of your name.