Nikica Jelavic saw a goal wrongly ruled out for offside at Molineux while Denis Stacqualursi also saw an effort chalked off by the assistant referee, but the center-back feels that the Toffees have got to take such decisions in their stride and not be affected by them ahead of the final game of the season.
"We scored a goal which was offside and we've scored one which wasn't but was flagged offside, so we're a little bit frustrated," Jagielka told the club’s official website after the 0-0 stalemate.
"It's tough but it happens. No-one's perfect. I'm sure the linesman thought it was offside and that he'd got it right.
"It's what happens. We created a number of chances - or near-chances - and maybe selected the wrong pass or maybe had the chance to shoot and didn't and stuff like that.
"But we're not going to be too frustrated. I'm sure the gaffer's happy - we got a clean sheet again, we played pretty well and just, unfortunately, we didn't manage to get a goal."
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The England international also feels that his side were denied a clear penalty when Leon Osman was brought down by Michael Kightly in the area.
He added: "I was on the near post and I've seen that Ossie got there just before him and, as a defender, unfortunately if you get there just that fraction late and take the man not the ball ... it should have been a penalty.
"I'm sure it was a foul and it should have been given. But, again, we can't look at ifs and buts."
Jagielka hopes that the Toffees can end the season on a high note when they host Newcastle on Sunday and believes that his side can finish above rivals Liverpool - although they may need some results to go their way.
He concluded: "We've got to look at the season on the whole now and we're guaranteed to finish at least ninth and hopefully seventh if we can get the right results and have results go for us between now and next Sunday."