Well you cannot argue with stats having said that if you didn't know about these figures and read a forum like this you would not suspect they were in the top 3 of the worst, as i said above one of the biggest issues they have is customer support (phone) its always been frustrating and it would appear from the TT community forum it still is and thats why i never use it.
I have been with TT for over 10 years and my parents have been with them 5 years neither of us have had major issues i am getting FTTC 80/20 Fibre for £27:50 per month for the next 12 months (6 months into the contract) and i will be renewing when the time comes.
TT also guarantee the speed and if you cannot get it you can leave so worth trying if you are out of contract with a different ISP -
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