Unhappy from Old Toronto

DO NOT use them. I rent my water tank through them - when I had issues with my water tank in the middle of winter, I was left with no hot water AND no heat (since my heater is dependent on my hot water) for more than 24 hours as they couldn't get a service person over. Latest fiasco is with their billing. Their system had a glitch with the April, bills which I had to call and inform them about as they only thought it was with the paper bills. I have pre-authorized withdrawals that have been taken out of my account for over a year. With the latest glitch it cancelled the last payment going through and then charged me a late penalty fee for not paying it. They accused me of cancelling it even though the system set it up again (which they also accused me of doing even though I was not in front of a computer at the time). They froze my account and promised to call me in 24 hours once they figured out what was going on. 3 days later I called back and had to leave a message and no one called back. Called back another 2 days later and told me I needed to pay my bill right away so as not to incur late fees even though they already had my info on file. Then they double billed me for the same bill as it went through the system with a late fee as well as the payment they made me make right away. On top of all this, they had the gall to tell me not to worry that they don't think I am a bad customer for not paying my bill on time. Clearly they don't know the meaning of customer service and they are the ones who are a horrible vendor!