Sprint This is someone claiming to be Spring. It isn't the real Sprint. Fake Phone Bill and Collection Threat Jacksonville Florida

I received a fake long distance bill.  

Supposedly a call from my phone (which is not even set up for long distance; if you try a long distance number, you get a message saying the number cannot be completed.) Despite the impossibility of a long distance call being made from my landline, I got a bill for a long distance call to a number I don't even recognize that supposedly used the Sprint network.

The 800 number for billing inquiries is not an operable number and the invoice included a threat to turn it over to a collection agency.