I've had some very good, and very bad experiences with John Lewis customer service! Glad this sounds like a good one for you.
I was looking to get a new screen in the bedroom, but instead bought a £40 projector off AliExpress and seriously impressed with it for the money! Obviously not in terms of quality compared to the C1 but everything else gets a tick.
Customer service was s**t to be honest. It's taken 3 weeks for me to get a voucher so that I could order a replacement TV.
So because we'd paid using the Finance option, JL said they'd only issue the voucher to the finance company and that I'd need to chase them up to get the voucher issued to me. Which I was not happy about, and asked them why this needed to be the process, as the finance was taken out over 18 months, and had been paid off over 2 years ago, so nothing was owed. I was just concerned I'd be dealing with another s**t customer service team and i'd be lost for weeks. JL said they would speak with the finance company and see what they could do, and email me the outcome within 24 hours. I never heard anything back and have had to phone them 3 times chasing.
Today, I phoned again and got the same response, but the woman I spoke with ended up processing the voucher when I was on hold (she said she'd phoned the finance company and they'd confirmed I'd need to speak with them to get the voucher). Well, I got an email when I was still on the phone with her with the voucher code. So placed an order for the TV straight away - Clearly they don't know how their own system works, as it came straight to me.
Was tempted to order the G4, as it was only £200 more, but a quick look at the reviews on JL, and it had a much higher percentage of 1 star reviews, so figured it wasn't worth the risk. And I'm sure from the reviews I've seen, the C4 will be a decent step up from the C1 we've been using. If I can even tell the difference
So 65" C4 ordered with a fresh 5 year warranty. Hopefully, this time I'll not need to use it.