This is the answer.
Yes you have a problem, no-one can (reasonably) claim you did harm by cleaning, but there seem from your description to be more problems.
Take it back & make them rectify the mistakes they made. You paid for a professional job & thats what you're entitled to.
Allan Quartermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”