Bests & Worsts Reviews from Amazon

Paid for contractor service (via Amazon) to assemble - only to come home, to find pergola [VERY] crooked [photos] - just too late to do crap because I paid a lot (EXTRA) for cement to stabilize [because I reside in desert where wind speeds are often 25-60 mph]. Pergola was already assembled/in the ground, with poured concrete; however, the contractor (both deaf and only communicating me with pointing and using their cell phone's text/note feature to communicate). Also, I discovered few broken pieces (already assembled) & many beams not level/not secured. AND not even adjoining adjacent beams/posts. Pergola is beautiful - serves its purpose (car shade). Material is marketed as 'Chinese Cedar'. I ain't an expert, but this material fractures easily. Just hope it "holds up" - esp with high winds & frequent temps 90-118° AND that its set in forever, in concrete. Reckon I got what I deserve/signed-up for (??) buying something so large, so time-intensive, so complex, not having ability to physically inspect item, buying off the internet, and ETC, ETC.. I even received a berating email that the contractor had to assemble this item in excessive heat. 1st off: I didn't make anyone agree to perform anything, under any conditions, any date/time. And salt to wound: I even tipped these 2 contractors $80 -AND- bought each of them a full lunch (Panera Bread), in addition to water/drinks. They even knocked on my door, asking me if I had anything for them to drink. THEN.... (gets worse): the lengthy email from the contractor assembling this item went on & on how they had to make 2 trips to Home Depot for tools to assemble the item. The contractor went on & on about how he "went out of his way" to obtain items, to assemble this item. So, I'm confused how I (the consumer) am responsible for ensuring weather conditions are to their liking & that I am to have the necessary tools (specifically asked AND that I had to obtain/provide: wheel barrel, shovel, and cement). Paying someone to assemble this so I didn't have to spend any time doing this project, whatsoever & not deal with the aggravation to assemble this, YET, here I am.. doing exact opposite and then some, trying to resolve *this* ISSUE) - which BTW.. I see some reviewers on here were able to assemble this item in ~5 hrs. I'm impressed because 2 assembly guys (contractors arranged/paid via Amazon) spent from 8AM-7:30PM to do this project and ... I don't even trust these people and don't want them anywhere near my property - despite their having emailed me, called me (many times). I rather just burn this pergola during our next winter rather than deal with these people (contractors who "assembled" this item), than have to endure more stress and frustration with such incompetent, disrespectful, people. (and yes, I have email communication as proof the manner which I was treated and that I was the one responsible for their mishaps & being ill-prepared)