my housekeeper broke the stove knob

I was so happy to get the part before Thanksgiving. While I was opening the box I was telling to concierge how fast I got the part. A neighbor overheard me & asked who I used & I tor off the top of the receipt so he could use your company. He said all his knobs are held together w. rubberbands.
The best part was the help finding the serial #. I would have never found it on my own.
Thanks, Karen T