Yes I did.
Bad plumbing.
Don't mean to sound flippant, but I have been flushing tampons for nearly 30 years and have never caused any blockages.
The people a few doors down at my Dads house did however cause a blockage [and a patio full of shit in my Dads garden] by flushing baby wipes down the loo though, so I know it can be an issue with some pipes.
I have lived in various types of dwelling, purpose built 50s blocks of flats, victorian conversions, 70s houses and currently a victorian house. I have never had any problems, nor have my neighbours. I have been flushing tampons all that time.
So, my current homes plumbing seems able to cope, so I have no plans to stop flushing my sodden tampons.