I had to buy a PAYG AYCE data bundle in April from Three because moving house meant I had no internet.
I used and tethered nearly 100GB and it was fine, no complaints, I even sent them a complimentary post on Twitter. Some weeks/months after that they announced they're releasing new tiers and raising prices, so it was not meant to last
Last week I thought I'd leave EE and order a SIM card with a 30GB cap, checked coverage map and it said all was good.
When I got the SIM, it actually had issues with 4G/LTE, it dropped back to 3G often. 3G itelf was doing up to 10Mbit/10Mbit but the 4G? 0.10Mbit upload and anywhere between 1-15Mbit download.
I contacted them and they said it's all good and said to restart my device (the usual nonsense). I had another PAYG SIM to test with and it was the same issue in another device. A few days later when I finally get a moment to call them back they say there's a network issue in the area.
I asked OK when will it be fixed? "7 days Sir!" and they apply £6 to my account and promise I will get a text saying when it's fixed.
I asked why it wasn't on their website at the same time whilst checking again and wow, it actually says there's a long-term outage!
Then I found this thread about their anti net-neutrality practices, it confirmed by suspicions of BingeOn.
Suffice it to say, the number they got me is really cool and easy to remember so it's the only thing stopping me from cancelling right now, but I will have to!