Been out of contract for quite some time
I've been out of contract with them for quite some time but am on the older flext and web and walk style contracts where the mobile internet (3gb with tethering) was an optional extra that I pay for so I'm guessing I may dodge this one - certainly haven't received any text from them. This limit/facility is important to me as it acts as an emergency back up for when the ADSL occasionally goes tits up (I work from home so having a backup is important). The only reason I hadn't signed up for a new term yet was purely because of t-mobile's ineptitude regarding stocking of new handsets and their inability to call me when said stock was received. I wasn't falling for that "sign up now and we'll send out the phone when we get them" line. They were quite keen to get me off the contract I'm on when I was speaking to them about upgrading.
I'm also fortunate enough to have a friends and family discount so am loathe to switch providers as I won't get a deal as good as this anywhere else. Although this behaviour (which I was afraid of since the merger/takeover) doesn't instill much confidence in me sticking with them. I moved from Orange precisely because of their crappy data limits and that influence appears to now be taking hold.