Decided to get a quote from Octopus for an ASHP. Was quoted £4100 via their on line tool. (Add to this the government subsidy of £7500). Decided to look into it and arranged a survey having paid a fully refundable £200 deposit. I have no idea why they do this as you can simply cancel and get it back?
Very soon I had a lovely, friendly lady call around but unfortunately I really struggle with accents and she had one. I learned very little from her but she did her measurements and tests and left in a polite and professional manner.
A few days later I signed (on line, which is a ridiculous system) having briefly been run through the report and survey plan by my contact at Octopus. The plan of my house (on line) was impossible to make out. You could see the layout but none of the writing was readable. I pointed this out but was told it would be readable when the PDF was sent and it was. I signed as I was assured that I was still able to cancel the installation right up until the day before and still receive a refund. I was also impressed that they were intending to change 11 out of the 14 rads in my property. This Friday pm call was very rushed and I totally missed that they were intending to fit a Cosy 9 pump. All the surveyor had mentioned was a Daikin and indeed the plan of my house (when I got a readable one) showed a Daikin with a Madoka thermostat. It was only amongst the spec later on in the contract that a Cosy 9 was mentioned and (In my opinion) they are horrible to look at and were only released towards the end of last year so aren't a proven entity as yet. For me it's hard enough making the jump from a conventional form of heating to an ASHP without the added uncertainty of a newly design pump. I also expected to have a controller at home as I have on my Bosch boiler in order to set up the system in the way of scheduling the heating and water. I was rather disappointingly told that it would be controllable by an app. I hate this also. They have increased the warranty of the Cosy9 from 5 to 8 years which is a clear indication of their uncertainty of how long the things last and they're hoping to get more sold by doing this.
I have told them to cancel but when ever I speak to the person I've been dealing with he always intimates that I have up until the last minute to cancel and treats me like I'm still thinking about it. I have been given no clue as to how long it's likely to be before the installation starts anyway. It's not the Octopus I'd been lead to believe it was. He knows I don't want the Cosy9 so why are they not offering alternatives?
As a final note, the first estimate I got was on my account on their site and this is now gone. It simply allows me to re-apply and now gives my totally different options:

1) Turbo install £5637

A Cosy Turbo install uses higher flow temperatures to make the most of your existing radiators and pipework.

Quicker and cheaper to install, but costs more to run.

2) Eco install £7673

A Cosy Eco install prioritises energy efficiency to reduce your running costs and includes upgrades to your radiators and pipework.

Cheaper to run, but longer and more expensive install.

How accurate can these figures be? Surely they must be loading the price to cover any contingencies?
UPDATE! YES THERE IS SOMETHING YOU CAN DO BUT YOU WON'T. EXPLAIN HOW THIS HAPPENED.