I've almost given up on applying for jobs offered through agencies. (There are one or two who occasionally bother to acknowledge an application but most of them don't even bother to reply).
Even when they've actually got work available they seem to discriminate on the grounds of age (and possibly gender), even though it's impossible to prove it.
I applied for a job through an agency and received a very enthusiastic phone call from them, but I was then asked if I was aware that the job was only part-time. I reached for the job advertisement, which I has to hand, and pointed out that it was advertised as full-time. The woman said "Oh, you applied for THAT job, did you. We thought it was for a different one" (despite the fact that my application clearly stated the job I'd applied for and included the agency's reference number). She said "Oh well, why don't you come in and register with us anyway, and we'll see if we can find you something".
Nearly a year after I'd registered, I was offered a few days casual work, doing 12 hour shifts in the pouring rain, on a traffic survey. When I got there I met another guy of around my age (50s) who had registered at the same time as me. We both had Microsoft Office skills and office-based experience at supervisory level. (The other guy had run a Government department, with 100 staff). But neither of us had been offered a single office-based job since we'd registered. There were also two young women, from the same agency, working on the traffic survey. They'd also registered about a year earlier but, despite very little previous experience, they told us that they'd been employed almost continuously throughout the year. Grrr!!!