Link in post chages

I was given a sponsored post to copy and paste. The pictures did not show up, so I had to upload them. When I published the post, I was notified that it had the wrong link. I inserted the right link. When I updated, I previewed it and the original link was back on it. I did this 10+ times and each time the same result. I ran my anti-virus…thinking it was spyware and it was clean…so I ran 3 others that use and they came up clean. I have been searching for an answer but no luck. I was hoping someone in here had this problem or could tell me what I can to to fix this. I even tried to to this on my desktop and another laptop. No good
http://tpankuch.com/ is my site and the post is http://tpankuch.com/?p=1604 I updated to the current WP but this happened the day before when I had the old one too.