Applied for provisional six months ago. Still hasn't come.

Hi,

I was wondering if anyone here had a similiar experience...

I live in the UK, have done all my life. I applied for my provisional on 29/05/17. I have a history of mental health problems, the ones that affect me most are psychosis/ADHD.
After a month I decided it was quite a while because my friend got his in less than a week. I put it down to the fact that I obviously have a complex medical history and waited a bit longer.
Eventually I received a letter saying they had contacted my doctor and that they were making an assessment. Three months in I decided to ring the DVLA in Swansea. In short I was told there was nothing for my reference number.
I rang a few days later after that rubbish response (I don't see how they can tell me there's nothing for that reference despite having it on a letter from the DVLA, i think the woman on the phone was either useless of having a bad day) and was told that I just had to wait.
I understand waiting, and I don't mind waiting, but it's beginning to take the mick... I'm just wondering if anyone had any ideas for speeding up the process or if anyone has had a similar experience and how long it's taken for you to get your provisional (Although each person is different). The council has just axed a major bus route in my area meaning that if I ever wish to be employed I need to get driving as soon as possible.
Cheers.