Ambit energy is a shady, crooked scam! Stay away from this energy supplier!!! Their rate ended up being twice as high as what I can get elsewhere. They suck you in with a low rate at first and then raise it hoping you aren't paying attention (which admittedly I wasn't). After getting energy from them for several years on budget billing, I cancel because I was able to get the rate from another company. They then send me a $3,446 bill for the amount I am short on my budget billing from the start of my service with them. This is because they didn't let me know I was short in order to deceive me about how much they were charging me!!!