La B

I submitted my VAT return by QuickFile on the 7 December and received an error message. Rolled back and resubmitted a couple of times. Apparently there were problems that day. Have tried to resubmit return numerous times since then, on 27 December, 28, and today. The error message now is double submission. QuickFile says this implied that HMRC have received submission. However, on the my VAT page it says that there is no submission for this period. Impossible to get information online or by phone. The return is due by 7 January and I have been trying to do it for a month without success.