What will happen if I leave my junk in the storage shed I rented last month and not pay or pick it up?

They'll either get rid of it and charge you or prosecute you.

They'l make a tv show about auctioning it off.

your stuff gets sold

They will close in and auction it off to the highest bidder to pay the balance of your bill.

The stuff will, eventually, be auctioned.

In the US, it will go to auction to offset the unpaid rent. Here we have a TV series called Storage Wars that chronicles the auctions.

They auction it, there are about 20 shows on TV that show you that.

You will not get it back it happened to me

The storage shed owner will then OWN your stuff and sell it in an auction. What they do is sell the contents of storage units without letting buyers see what's at the back. They can only see what shows with the door open and people bid on it. The highest bidder gets it. all.

THEY will handle it and SUE YOU FOR THE TOTAL ................