charged vat twice on netsmart subscription

Just wondering why nobody mentioned this. The netsmart subscription already includes VAT but had it applied a second time on the bills if you are also a voice customer. This will be refunded next bill but I am not exactly impressed with is error. Then this company offers a good call discount package but refuses me because I won't pay by direct debit. I have a perfectly clean account since they started all those years ago, but you must start from scratch to alter the service eg change netsmart tariff. They treat their existing customers very badly; even the banks and mobile phone companies are better and more reasonable to deal with. Why the hell would I sign up to a direct debit (bank account only no credit cards yet they want to know do you have one) with a company that has a woeful record of making mistakes with my account (over €100 per month even with their competitive call rates)? The billed me every month for 7 months for a bill had paid the previous January which they accepted but just couldn't fix. Their accounts dept. caused all the hassle about the setting up of Netsmart as well. I would lose big time financially on going back to €ircon but I am tempted for the first time since happily leaving them.