Customer and GC signed contract November 2018, with work expected to start February 2019. Customer contacted GC via email multiple times to get project started and never received a date. July 2019 customer told GC contract was going to be terminated for default. GC asked for meeting and customer agreed. At the meeting customer issued Constructive change order by removing many line items from original contract because customer had to contract others to get essential work done when there was no response from GC. Subsequently to July 2019 meeting and promise to complete job by October 19, 2019, GC has missed 4 promised deadlines for completion, has provided sub-standard work that has been noted and recorded by locality inspectors. GC unilaterally increased price of contract and now demands that customer pay the increased contract price. Can the GC legally do this?