Fatal error: Out of memory (allocated 833355776) (tried to allocate 64032 bytes)

I have an error like this :

Fatal error: Out of memory (allocated 833355776) (tried to allocate 64032 bytes) in /home/bigbol5/public_html/catalog/controller/feed/google_base.php on line 109

I contacted customer support, they increased the memory size yet there is no use. I don't understand where the problem is. Could someone please help me out.