When you put in a new entrance door the storm door will never go back on. They should have told you that. I've been putting in doors for 30 years and the old storm door has never been reinstalled.
Go out and buy a new storm door. If part of the contract included the installation of a storm door, don't pay them until they finish the job. But get the door soon.
Ron

Thanks for the reply. The installer called me back and said since they wrapped the trim around the front door, the old door would no longer fit. I needed 35x80, a custom door. So I went off with my measurements yesterday and was told that a custom door depending on style would end up costing 5-6 hundred dollars! That's quite an upcharge! So I called the installer again and asked him if he could remove the wrap, install the door and then rewrap the trim. He said yes he could do that. So I picked out a reasonably priced door and it came home with me. Hopefully the installation will go well. Thanks again!

Teresa