Well I mean if it was a basic question then there is no excuse
I was thinking of joining but after reading some of the recent customer service complaints maybe i'll stay where I am for now.
I have been eyeing up TTB.
And the question posed by the OP was?
Yes the Zen administration side of the business could do with quite an overhaul and it would be nice for them to have some bark with BT when it is plainly obvious that BTs database contains an error. But then while you are a customer you are unlikely to make contact with the company that often and when you do ,everything gets sorted in one short call.
The TTB product is very good and gives more for your bucks than is on offer from Zen, but I have personally found that their support and admin side is no better than what you get from Zen plus an almost arrogant approach to their customers. The customer portal site provides a lot less information on your line than that seen on the Zen site.
I like the fact that Zen's contact number is a regular land line number against TTs 0800 number. Calling an 0800 number from a mobile when your service is down can cost several pounds which is rather like rubbing salt into the injury.
It's a tough call to say which is the better of the two companies on their business bundled products but by the slimmest of margins my vote goes with Zen.