IIRC someone on the phone came back with 24Mbps. We don't know where that came from. Yes, that is junk.
If you order over the phone and are given that again, it is junk.
If you order online, at some point it gives you an estimate. If that says 24Mbs, it is junk. All estimates come from BT Wholesale anyway. ISPs don't have their own estimating system - theirs just query a BTW database.
Your line is a known quantity. 11 Mbps. End of

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My broadband basic info/help site - www.robertos.me.uk |
Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 55.8/14.5Mbps @ 600m. -
BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
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Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.