B&G Landscaping

The B&G Landscaping team visited my home in February and we agreed on the project scope. A price quote was sent by them and agreed upon in writing. There was a month delay due to my wife giving labour to our first child. After this, we agreed on a new date in writing. I then spent £3000 on the materials that the B&G Landscaping team asked me to buy. Today, a little over a week before the project commenced, the team has pulled out of the job. The reason they provided is they now have too much work on. They offered to requote" the job and start on it "in a few months or so". I'm quite staggered by how unprofessional this is."