For obvious reasons, I have to answer the phone when 'that' 0800 number calls.
Sales this time, which is a relief

.
Same usual lines:
"Mr TheBoy, your exchange has been upgraded blah blah, and
we guarantee faster speeds than you get now blah blah"
Thats a fine statement with no substance, as I *know* they cannot know what speed I get, but I'll play along...
"Oh, really, what speed will I get?"
"What speed do you get now sir? Ours will be faster"
"Does it matter what speed I get now, what speed can you provide?"
"I need to know your current speed before I can check"
Willing to play along
"55Mb download"
Somewhat shocked and flustered
"Oh, hold on.... ....58Mb", nervously
Intrigued, I reply
"How come you can provide faster, when its the same fibre, and same copper line?"
"Because we can provide the HomeHub 3, sir, voted the best router by <insert some lowlife rag> readers"
Even more intrigued
"And how does the HH3 make it faster than any other router?"
"It has a special speed booster, only fitted to Homehub 3s"
At this point, realising I was wetting myself with laughter she put me through to her manager.
"Hello Mr TheBoy, blah blah"
"How is it you are guaranteeing me a faster speed than Zen Internet?"
"Homehub3 sir"
"What about it?"
"It has a special booster"
Getting a little fed up with the BS now, I ask
"Can you tell me how FTTC works?"
"Yes, sir, I can, there is a fibre optic cable from your exchange"
"No, from an exchange about 15 miles from here" I interrupt
"Thats not right sir, its from your local exchange"
"Nope, comes from Banbury"
"It can't"
"It does. OK, to the point, what speed is the HH3 to the Openreach modem?" I ask, knowing I've got him
"Depends on the line, but with a HH3 with its booster, you'll get 58Mb"
"So not 100Mb then?" I ask sacastically
"No"
"OK, whats your <internal info> and <internal info>, I'll take this up with your <internal info> in the morning"
"Oh....." in a voice knowing he's been caught...