Awful company, booked in for fixed price service & repair on a Vitodens 200-W, £360+VAT upfront, had no hot water and a leak on condensate pipe, Veissmann Engineer turned up & straight away said he's not fixing the leak, at no point when booking in did they say they will not fix the leak otherwise I would of gone elsewhere, he got the hot water back on by carrying out a service and left leaving the boiler pipework still dripping. Anyway when we called up to complain, they basically said there happy to still charge the £360+VAT because they got the hot water back on and because we paid upfront when booking, there not interested in refunding us anything because there happy with the service they provided, even though they only fixed half the problem. They even terminated the phone call because they didn't like listening to a complaint about there service. Now I've got to pay another company to come out and finish the repair, they have also not provided an invoice and not sent me the service certificate.