Has anyone experience with this company?
Yes. They are a crap bank. Their customer service is awful.
I sacked them and now bank with Barclays :)
I have an offer from them, but i would like to get some insight in the company culture, working hours (long days?), growing potential, etc
I'm sure you did some research before you applied for the job, right?
You should have discussed with issues in your interview.
Make sure they put your rate of pay and your working hours on the contract...