Shop page keeps multiplying when I delete it

I’m using Paypal Shopping Cart version 1.2.6 and I tried to set a page I already had extablished as the shop page in the settings under product. But when I tried to trash the shop page (after copying over the code for the shop to the established page) 80 more shop pages were created in the next few minutes and they keep growing. I will go to the shop page used by the shopping cart even, as long as I can put it under the menu I want it under and as long as it stops multiplying like freaking tribbles… Help! What can I do to stop the takeover of Shop pages??