It's Vision Financial a collection agency, they call your number and say nothing which is harassment.
If you find this annoying, call them back and express your displeasure.
Their call center number is 866 950-6550. This number is for the public and is answered by snotty debt collectors.
Their other number is (815) 713-2900. This is their private corporate number in Illinois. For obvious reasons they don't want you calling this number.