Problem with invoice

Dear Sir/mam,

I bought wifi router before 11 months i given my all the details but after some time I have seen my tax number not right so I visited your service center in Tavira, they check and solved. But after december i don't get invoice in my email or sms so before payment last date i can not pay my invoice due to some issues with electronic invoice so please help me , also I'm using NOC client application but there is until December invoice. My contact number is 9xxxx and old one is 9xxxx(Out Of Service).