Extended TV Warranty

I bought a Samsung TV a few years back. I took out an extended warranty as these days you never know. Lucky I did as the TV started to show black stripes on ethe screen. I took it in to be told it should take three weeks to be sorted out. Three weeks only to come back to me to tell me it has been booked in for assessment. Another three weeks until I hear from them what the problem is, not the solution. That six weeks with no TV. I feel that if one has a warranty that is still valid then yes there is a process but if one takes out an extended warranty which is extra cash thrown in that one should have their return sped up. I feel that this is totally unacceptable and do not know when I will get my TV back. Right now it looks as if its going to be around three month sif I am lucky