continually scanning media files

I am so frustrated with my phone! History - for 4 days it has been scanning media files (when I check for space it appears to be full) so I went to my service provider who had no idea what to do! I rang LG support so far 3 times over the last 3 days and each one has a different solution, none of which appear to work!I have installed LG Suite on my PC and it tells me that there is nothing on my phone (ie no photos) Basically my LG E 975K mobile phone cant download any files, cant open the gallery, cant take a photo, and cant use my Strava. When I try to use any of these functions a little black box tells me to "try again after scanning media files"When I click on Storage it says the total space is 0.00B My apps are 218MB and Available is 000B I am at a total loss as to what to do now. Any suggestions would be appreciated.