Heinz — Foreign body in food can

I opened a can of your beans & sausage & found a thin piece of plastic in the bottom, what action can I take, the last time I complained to another company with a similar case they sent me a bag to return the item & the price of a new tin of ham to replace the one with the foreign body in it, If that is all I can expect from your companies is it not a waste of my time & effort to solve your problems, If I do not receive a bit more compensation I will just report it to the food standards agency Kind Regards Ann Newsham