Business Overdraft rates

[Jonathan---]

Good afternoon.
I work as a manger is a small/medium retail business. We have an overdraft facilty which is more than covered by the large value of stock we continually have in. The bank also hold deeds to premesis which are fully paid for and cover at least double the amount of the facilty. So we are not a risk of any sort.
Our overdraft is due on 1st October and once again this year the bank have come to us only 5 working days before it is up with a verbal offer (they never seem to put it in writing) of 1.5% over base plus fees of 1.5% plus £70 a month to manage the account. Our fees have gone up continually and even this year on reducing the facility by a sizeable amount the fees are slightly higher.
Firstly, are there better deals out there? And secondly i presume this is not a proper way for a Bank to behave? Should we not have 30 days notice and everything in writing?
Thanks.

[buildersmate]

That certainly isn't the way that my (business) bank operates.