meter reading problem


I have a meter reading problem.
Your system accepted my gas reading but seems it didn’t accept my electricity reading. I have received a confirmation email about successful submission of both gas and electricity but your system is still showing the last submission of the electricity was in April. I was charged for the electricity based on estimated usage even if you confirmed the acceptance of my reading.
On the top of that you estimated a usage which I haven’t had close to it in the last 6 months.
Please advise ASAP!