as much as a loss of service is an inconvenience and you wish you could get something like £1000 off them (like the accident insurance ads on tv) unfortunately it isn't going to happen. A couple of years they had a big problem affecting the whole of Lincoln (don't know what it was) and nobody had internet access for 4 days and I nearly died
I felt like they owed me big time but after moaning and moaning they offered me a 1 week refund which is a quarter of £25. Although you may want compensation, it isn't worth the effort.