from the T&C you only get compensation after the first 3 days which is openreach timescale for fixing faults
If you expect a different service level agreement then be prepared to pay for it. Residential SLA IS 3 days, the only compensation you you would be entitled to after 74hrs is 2hrs worth.
that's why you have agreed T&C to avoid confusion
It is also 3 days from when you reported the fault. If you haven't reported the fault you may not be entitled to any compensation.
See link re compensation
Ho Ho Ho ! You've got more chance of the fat man and his reindeers popping through your cat flap 😉