Help with Contractor extra charges and scope.

[Stella George]

Hi, looking for an opinion or what to do.  
Got a quote from a contractor to remove a support beam and install a new support beam.  Contractor came to site day 1 to start.  I paid after day 1 about 60 % of the job.  
The contractor looked and quoted the project then when they started the job had to sub contract a plumbing company to move some pipes lower so they can get the new beam in.  Had to move an electrical box, move a dryer, move a gas line,etc.  Contractor mentioned the whole time verbally, not going to beat you up on it.  When the work was done, they charged an extra $500 for extra work/time.  Then I was under the impression, that the plumbing work that they needed would be covered by them.  It is an extra $2500.  

What do I do ?  It was a quote not an estimate.  I understand changes come up.  Ok here’s $500, I get that.  But what do you do about an increase such as the plumbing work?  Contractor looked and quoted job, you missed that you needed all this plumbing work.  

[Wayne Brooks]

This is why a scope of work should be Very detailed....which includes what is specifically included, and what is not included.  We have no idea what language was in your quote/contract.