Who doesn't want to save money , only a few , the rich people , millionaires like you , or are you ? I didnt ask more information? What part of English did you not understand that i did !You chose the shop.
It sounds like you chose a lesser quality shop to try and save some money.
I understand your complaint as it is common. Ultimately the things you are unhappy about point back to you and your failure to obtain any additional cost estimates or inspections.
You have good reason to be upset, but you have not provided anything that I have seen that indicates the shop did anything wrong.