Banned for not
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Join Date: Feb 2008
Location: United Kingdom
Re: Timing belt failed twice in a month
Those strips of metal look like they are from the tensioner, that would mean they have tried to do the previous repair as cheaply as possible, I bet they only replaced the bent valves and left the guides there, they also would not have bothered to check out the big end shells, in all this statement of yours "I recently went to dealer(not an authorized one, but a good one) for some small repairs." is completely wrong, They were right to say that you needed a new belt (36,000 miles or 3 years, whichever is sooner) but obviously they let the apprentice balls it right up for you, then when it went back, they let him/her (got to be pc now) at it again.
Not doing the initial big end shell checks is negligent, if one or more of those has failed then it could make the crank stroke eccentric and throw the newest belt, If I where you, I'd be straight onto Citizens Advice and Trading Standards, the 2 greatest names to throw into any debate on blame.
You should not pay a penny and until an independant person has examined the car, should not let them touch it.