I seem to have inherited an ING account as a result of my now defunct kaupthingedge edge account last year. They write to me almost every day with junk mail

Hate them.
This is rather annoying. I had a Kaupthing account and already held an ING ISA at the time. They send me e-mail and post advertising their ISA to me, including the bonus rates for new customers - obviously they for some reason haven't related my two accounts with exactly the same name and address to each other.
I also had to complain to ING when I didn't get a bonus rate described in a letter that was sent to me. It was only about £10 worth but the only reason I stayed with them at the start of the tax year was because of the letter.
Wrote them a letter, got one back at their first "target" date of five days for responding to complaints to say that they were still investigating and would get back to me within the banking code's 3 week target.
Pretty much at the end of that period I received a letter to tell me they'd added £25 to my account, about £13 was the amount I would have after compound interest on the amount for 10 years, and the rest was just as an apology.
Turned out the initial letter I got with the bonus rate was sent to me by mistake and I was never meant to have it.
I can't really fault them on the response although it did take a while.
At any rate the interface is easy to use and I don't have any major problems with ING, but the Natwest e-ISA is a much better rate at the minute for me, without any bonus rates which will disappear, so I've just opened that and will be transferring everything in the ISA there shortly. Already have a current account with natwest so it's quite useful having them in the same place, provided RBS don't succumb

. I don't really want to have all of my savings in the Netherlands anyway.