Claimed he can repair the problem, and told you all the possibilities of the problem, and could never fix it.
Then he needed to switch every different parts to try, but we need to wait for the different parts every time for several weeks.
5 weeks later, finally the problem fixed, then he increased the price to a skyhigh price.
Very unethical and dishonest way of doing business!!
Cons: expensive, long repair time, lack of parts
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