Electricity Bill Issues

 It seems that the season of 'estimated' billing has begun with my electricity company. After several months last spring where I read and submitted my meter reading myself the electric company FINALLY starting sending their meter reader around to actually read my meter (the self readings came after almost 9 months of estimated bills) and I thought this problem was taken care of . Until I received my October bill which was once again about $40 over what I thought it should be and then realized it was <sigh> estimated. What to do?
Well I sent off an email to the power company. I explained that I understood that estimates are based on the previous year's bill for the same time period. In my case that previous bill was an estimated bill based on an estimated bill for the year before and so on and so on. I also explained that if they took a look at my account they would see that they'd so overestimated my usage last year that I had  one month where I owed no money and another where the rest of the credited amount took care of over half the usage billed. I then told them that based on my actual usage for months with similar weather conditions etc. I would be sending them an estimated payment and that I would be doing my own meter reading for the next billing period. I then paid 2/3 of the amount due (which I thought was still slightly high).
The power company responded with an email inviting me to read my meter immediately and submit the reading for a revised bill. I responded by informing them that a meter reading seven days into the next billing period would not accurately reflect my usage for the previous month. I am still happy to read the meter for the next billing period if they are unable to send a meter reader out.
I have not heard back from them and still have power.