Dear Sir or Madam,
I am writting to you, because i received a mail by booking, in order to apply my VAT number. I tried several times, but for some reason your system does not recognise it, so i can not register it to the system.
I don't know what else i shloud do and since I have to register it, till the end of the month, will you please let me know what might happen, or what else i can do?
I will wait for your answer.
Thank you in advance.