MWEB - no customer service

I've recently enquired about changing my adsl service at my work place to Fibre. Mweb are not able to assist as they only offer to residential. In Tuesday 2nd July I have notice to mweb as they can't offer the service that I require. I get a call this morning to confirm my cancelation to be told that I have to give one calendar months notice so my notice will only be effective from 1st August. I can understand if I'd only given notice on 5th or 10th July, but 12 hours late!!! I honestly think this is something that can be agreed to, I've been a customer of yours for years and because I'm 12 hours late with my notice period you are enforcing the notice period from 1st August. If this is the way that you treat your customers then I'll certainly be moving my residential services away from mweb too. Clearly your rules and regulations are more important than your 'Customer Service'!!!