hope your paying by credit card. I'd demand the defective parts back, change them then tell them you want your funds back. I had a dealer do this to me for $800 in 5 sensors once. I told him nfw that 5 sensors could go bad at once. Better chances of hitting the lottery. I got the parts back, re-installed them myself then took the new stuff back the next day and demanded my money back. I got it too.
They'll pay a chargeback fee to the bank no matter what on a credit card dispute.
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