Falsely declaring my credit card hotlisted

I have had an etag and paid etolls since their inception. Sanral sent me a letter on 22 July saying my means of payment for etolls was invalid, and that my credit card was hotlisted. <br> I complained that there was nothing wrong with it and they must reinstate my card. Sanral rep**** saying I must visit an etoll booth to have it sorted, and that the complaint was closed. I opened a new complaint that it was Sanral's mistake, not mine, and therefore I expected them to fix it instead of inconveniencing me. <br> They sent me a letter on 24 July saying my enquiry was in progress. I followed up several days later by phone and was told it would be escalated, but there is still no response. Does Sanral intend to fix their mistake? <br>