Need a job, preferably a plumbing apprenticeship in Kent! Please Help!?

My name is Dannie Morgan and I am 25 years of age. (26 in March) I live in Gravesend, Kent. The reason I am writing to this is I feel this is my last option. I have wanted to be a plumber since I left school, but stupidly enough didn't get into it at the time. Now I'm older and have a 2 year old daughter, I'm now realising what a big mistake that was not to get into it then. I've tried getting into North West Kent College in Gravesend to study plumbing, but they say I'm too old. I have tried getting into the Gillingham College but they say I can get on the course but I need to be employed alongside a plumber so that I gain experience and so that they can come out and see me whilst I'm working, and the problem with this is, no one will take me on, I have even offered to do it voluntary. I have phoned every company in Gravesend and surrounding areas to try and be a plumber's mate, as well as voluntary work but just can't get into it. I'm writing to you asking about this as North West Kent College saying I'm too old is actually really unfair, and they pretty much contradict themselves in saying I'm too old, as I know numerous of people at the college who or my age, and even much older, who are also getting it funded for them. There is no help whatsoever out there for people like me in my situation. The job centre say, don't waste your time and just get a job, and yes that would be fine if the right job came along that paid the amount of money that I would need to survive on, pay my rent, and support my daughter, but there is nothing like that out there. I also don't think they have a right in saying this as surely, it would be better for me to get the qualifications in the job that I would love to do, rather than working in a job that I don't like doing then later on down the line, end up back at the job centre because I'm hating my job. I'm in a catch 22 situation and would really like your help and advice plz help