Texas Department of Transportation / TxTag.org review: Refund the overcharges!

My wife and I are both retired. We do NOT use the toll roads every day, however, recently, we have been getting charges of over 300 dollars in a 1 month span. I called TX tag and the customer service said they would look into it and hung up the phone on me. There HAS to be something SERIOUSLY wrong with my account and it is NOT being looked into! The 300 dollar charges are only part of the problem. I was told that the extreme charges are to "catch up" with previous charges that were not made since October 2020, however, I've been charged for all previous months since October 2020 with the exception of January. We do NOT use the toll roads enough to justify these charges and upon looking at the information that's available, the amount of the charges do not coincide with the toll data acquired from spreadsheets. We asked for statements to back up the charges and thus far and TXtag officials have not produced them. In fact, the most recent statement available dates back to October of 2020, which is totally unacceptable. I was told that the statements would be sent, however, they have yet to do so.