product title not updating.

I edited some of my product titles to add more keywords and just make it looks better in general. I edited a couple of them and waited, it usually takes atleast a day to update but this time it had been more than 2 days so i opened a case on Amazon and explained my issue. They said they fixed the issue and to wait 1 day. It’s been a week now and nothing has fixed. I have opened so many cases in the past few days I don’t know what the problem is but I don’t think Amazon is understand my issue and it’s getting really frustrating Anyone know the problem ? Or can help me ? I would really appreciate it