You don't "cash" in you shares, you sell them.

I agree with Caren, but if you can open a brokerage account, give the stock to the brokerage firm, they will sell it for you

And if this doesn't work - ask you mother

this has to be more made up than a moon made out of cheese

If you don't know how to sell a stock,,,, the stock is NOT yours,,,

go ask your mom