Good for you for taking the first step towards improving your care! With an A1C of 12 you probably don't feel so good, and I can assure you that you'll end up feeling a lot better with BGs that are in more of a normal range.
First and foremost, you HAVE TO start checking your BG on a regular basis. You cannot get a pump unless you have about 3 months' worth of logs. The primary reason for this is that the doctor cannot help you even figure out what your basal rates are on the pump if you don't have this information. Before going back on the pump last year, I had to improve my logging so that my endocrinologist could have enough data to establish my basal rates. So start there.
A pump alone is not going to improve your A1C. It does not make everything with diabetes magically better. However, if you're dedicated to your care and put in the effort, it can make living with diabetes easier and a bit more normal. It can give you tighter control, but only if you're checking your BGs, reviewing all your data, and making adjustments. It can make things like exercise and eating different foods easier, but only if you pay attention and make the necessary changes with your pump.
If I were you, I would start by doing 3 things:
1. Get on a regular schedule of checking your BG before and after each meal. So, at least 6 times per day. Record this information in a log book. If that doesn't work for you and you have a smartphone, try using an app for recording BG levels (I found this easier personally).
2. Take your insulin as prescribed. If you forget, set an alarm on your cell phone to remind you.
3. Read, "Think Like a Pancreas" and "Pumping Insulin."
The bottom line is that only you can improve your care. The doctor cannot do it for you and your husband can't do it for you. These people can support you, but at the end of the day, you're the one who has to do it. It's up to you.
As your A1C comes down, you're going to probably feel low quite often even when you're not. That's normal, and its just your body adjusting. You will have to get through that part, but if you bring your sugars down gradually, this won't be too bad.
Do this for at least 3 months and then talk with your doctor again about the pump. The most important thing about using a pump is that you HAVE TO CHECK YOUR BGs frequently. Because you don't have any long-acting insulin in your system, it's very easy to slip into DKA if you experience some sort of pump failure. Only people who regularly check their BGs are candidates for a pump. In addition, pumping takes A LOT of work. Initially, you will be spending way more time testing in an effort to figure out your basal rates.