Acorn is by far the worst letting agent I have ever dealt with. I had been looking for a one bedroom flat to rent in southeast London and registered with Acorn. I was quickly contacted by agents from three different branches, which I thought was a good sign. They called me, made me repeat everything that I had already filled out on my initial contact form, and then emailed me some properties that I'd already seen on their website and that weren't what I'd just told them I was looking for. Incidentally, all three agents sent similar properties, ones that I'd seen posted for let for a very long time already. I called back, explaining that they weren't to spec and asked about several other properties on their website, all of which were let (no indication of this on the site). Each agent told me they'd be in touch about new properties.
Later I received a mailing from Acorn; paper copies of the properties already on their website, most of which are already let. This is a complete waste of paper and effort.
When I saw a new property posted on-line, I called the appropriate office (Sydenham) three times to try to view it. This happened with two separate properties. Each time I was told I would be called back. I never was. That weekend, though, three offices (including Sydenham) called, leaving messages about new properties they had. I called the Peckham office back first who told me about some properties around £900 pcm. I told her I was looking to spend around £700 pcm and she very snarkily told me I was unlikely to find a one-bed flat for that little (even though I'd already viewed properties like this from other agents, have found one and am currently letting it and despite Acorn having some £700 1BR flats on their own website (let, of course)). After that call I didn't bother to contact the other two agents and gave up on Acorn.
Just the other day I got a slip in the post for a packet that was 12p short on postage. There was no sender address. To retrieve the packet, I needed to go to the post office to pay the missing postage and a £1 handling fee. I went to the post office in the morning, which means arriving late to work, and paid the £1.12 fee.
It was one of Acorn's worthless paper mailings.
I have since contacted Acorn asking them to stop contacting me. Don't waste your time with them. They are the bargain-basement of letting agents but they are not worth the hassle. I am so glad I don't have to deal with them as a tenant.