Thats not my name!

So something, like my sister, that bugs the crap out of me is when people write my last name with TWO ffs. Like why! Every note from attendence that i get says angerhoffer.
Even if they are directly looking at my name and then copying it onto a paper they automatically throw in an extra F! AND THERE IS ONLY ONE! like how are they so incompetent! they are staring at the exact spelling! They only see One f on the paper! Obviously the attendance people at my school are rude and incompetent!
So another example of this happened today. If you have somebody spell their last name out for you, one that you have never heard before, you copy it down letter for letter that they say on a paper! RIGHT?
This office aid Asked for my name i had not even said my last name and she asked me to spell it so she could right it down. I said anger and she said spell it so A-a N-n G-g-E-e-R-r -F-ff! can you believe that! she was doing so good until i said a single f which for some reason caused her to write too! GRR! why is the world against me?
I have been cursed with everybody sucking at my last name! On my high school diploma i dont want to see two ffs and if i do i will ffreak out!