The problem started in XXXX of XXXX. Bank of America offered ( via promotional checks ) " No Payment, No Interest '' terms on my credit cards, but repeatedly charged interest during that period even though payments were made on time. 

I had to call at least XXXX different times ( spending on avg 1 hr for each call ) to get interest that was inaccurately charged to my account removed. 

The matter was escalated to XXXX different managers, each promising a quick resolution & no further errors in processing the interest on the statements, however as of XXXX XXXX XXXX, the issue remains unresolved & I have been once again charged interest, even though I am within the promotional period & have been making my payments on time. 
