Hi there, I'm really not sure where to put this but thought that a place with other self employed people might be a good start.
I teach piano and keyboard for a living, both in school and privately. One of my private pupils is a man in his mid eighties who has been coming to me (from some distance of about 15 miles away) for about 3 years.
In the last 6 months he's had a couple of falls and his health has deteriorated considerably. He used to drive but lost confidence after the first fall so either I or DH collect him from the station, 4 miles away. In terms of time, it's not cost effective, but he's been with me a while and I couldn't just say I wasn't going to bother with him any more.
The last 2 times he's been due to come he hasn't turned up and we've waited at the station to no avail (he has no mobile phone). I've phoned his home and he's been very apologetic but he's obviously getting quite confused (last time he was blaming it on me having gone away - I hadn't).
I told him last time the lesson would have to wait now until after the Easter Holidays. I'm not teaching this week as I've had a really mad term and I need a proper break from it. We booked in a date later in April. I had to keep reminding him of the month. He was sure we were still in February. 
Since then (start of this week) he's phoned me at least every other day asking when his lesson is. Every time I tell him and he finds it already written in his diary. Part of the problem is I don't think he knows what month it is any more. He then chats for ages, telling me all the same stuff he told me before, and I just cannot get him off the phone.
He phoned tonight again quite late. Easter Sunday, for goodness sake. It's not his fault, I don't think he had any idea it was Easter Sunday. I've told him every time I am on holiday this week but it makes no difference, I still cannot get him off the phone.
What on earth can I do? I'm not just in it for the money and I do care about my pupils and their welfare but I cannot go on like this; I have family and children and I need to get away from work for a bit. I have caller display so I know it is him but if I don't answer he just calls over and over again, every half hour. He has family but I have no contact details for any of them and I don't live near so have no idea who his doctor etc would be. I can't just say I am stopping lessons - it would be too mean, and anyway, I doubt he would remember that information and would still keep phoning. I am genuinely concerned for him, but I can't go on like this.