I have received two missed calls in the last two days from this number. I haven't answered because I am at busy at work. As a general rule I don't answer a number I don't recognise. I believe if it's important they will leave a message and I can then respond.

Annoying though as I'm not interested and them being agressive and me learning it is Integral I will never use them out of principle. How dare they solicit my private mobile number from somewhere and call me, it's harassment!

Keeps calling several times a day/week while im at work and never leaves a message. If their business was so important you would think they would leave a message for you to call back...

indeed, very bad experience, called me twice per day, very annoying

I received a call from this number today but I missed it. I called it back and it was definitely integral energy. I was put on hold and after waiting 5 minutes I hung up. I called their main accounts number and the operator indicated tat number was from Melbourne, it is their contracts department who sell contracts to customers.

I had this same thing happen.
I called it back and their computerised phone system says they are Integral Energy.
Unless they leave a message, I am not answering or calling back.

Continually calls but won't leave a message! Very annoying!

this number repeatedly calls all day and upto 10-10:30 pm at night at least 3 days a week .when you call back no one answers very frustrating!