@Silvertongue700,
I think your boss has over reacted.
He probably thinks your tone is a bit sarcastic, I don’t think it is, but the second sentence could be construed as such.
I wouldn’t use the first sentence either, it sounds like they’ve only just got round to it.
I would be very formal in future.
“I have just received my business cards. Unfortunately the phone number is wrong and my name is not spelled correctly.
Please could you send me some replacements with the correct details,my phone number is and my name is spelled.
Could you let me know how long the replacements will take.
Thank you”