Tricky one. I'd have been livid had I been paying tuition fees for my 'supervision' and I can see that many academics are overworked but my supervisor, in my opinion, is very anxious to be promoted (work is the only thing in their life and I sense they're a lonely person but could be wrong) and volunteers for absolutely everything, far too much on their plate and I, for one, suffered for it. The PhD for me was not a good learning experience and I didn't feel at all inspired by my supervisor. I'd have put a complaint in had I been paying fees. They just didn't do their job, in my opinion.