Phone rang, I answered as we run a business and it was a mobile number. Silence on their end and then they hung up. This has been happening quite a lot lately and invariably I will get calls later from an 03 or 02 number, which I don't answer as they are always spam calls wanting to talk with the business owner for some sort of SEO thing or other. Honestly, they should be able to stop these calls (can't register for the 'Do not call' register as we are a business, and these callers don't care anyway).