Lemon Tree Landscapes

We got our sod replaced on 26th June 2020. I was very much disappointed to see that after only 15 days, weeds started popping up. I called him on 23rd July and he promised to send someone for weed spray. Nobody showed up till now. It’s also difficult to contact him on phone. Now we are pulling the weeds every day but I don’t think these will go. The main reason to change sod was to get rid of these weeds which are now again there. I have a big lawn (2700 sq ft) and I think the job was not done properly.