I am so furious I can hardly speak 
My 9 month old table top dishwasher went wrong in mid July. As it was less than a year old it was still under warranty. So I contact Currys and an engineer is booked to attend on 15 July.
Engineer couldn't fix it so took it away. Almost 3 weeks later it comes back and it doesn't work. It actually had a new fault despite having been in the workshop for weeks. About a week later another engineer comes out. Still broken, can't be fixed and is condemned. He tells me Currys will arrange a replacement. 3 weeks later NO CONTACT. I email and try to phone but am on hold for ages. Finally get through on 30th August. Item out of stock and won't be in for weeks. I can have a refund of the cost but obviously I have paid for installation etc and I would need to pay again if I went elsewhere.
On Monday I get a call about my email complaint (about a 5 day response time so that's improving). Get more patronising bollocks off the woman on the phone about item out of stock nothing they can do even though it's been weeks and the service has been abysmal. While on the phone I can see my dishwasher for sale on website. She agrees to order it and I will get a call either that day or tomorrow. No call comes but an envelope of receipts arrives on Wednesday. Try to get through on phone but stuck on hold again.
So to today. A text arrives telling me my delivery is coming today. Eventually two guys arrive with enormous box. They take away old dishwasher then wave bye. The box is the width of the kitchen floor and I can't get to the only bathroom and loo (and the baby's just shat all over the high chair but that's not their fault). I ask them where they're going - no installation's been booked.
They take pity on me and unpack it and install it. Except it's not properly installed. It's lurching towards the sink, all the tubes are twisted, there's water everywhere and the electric cable is sitting in the water. They've not turned it on, which is just as well because I suspect there's rather a large risk of electrocution and/or flooding.
There's nothing Currys can do 
even though there is a hazard sitting in my kitchen. I am livid.
There have also been missed appointments, missed callbacks and each time I have had to wait in all day because they are whole day appointments. That's 4 days so far because they didn't tell me about the last delivery. Oh and I can't speak to a manager apparently.
Sorry it is epic but I have told you everything to avoid the dripfeed. I have remained calm and polite throughout until the last Kafkaesque phone call (another 20 minutes of my life gone) where they told me there was nothing that could be done today despite there being cables in water and I have two small children at home. I got a bit tearful then 
I am thoroughly fed up.