FNB not getting back to me on critical safety issues

I have informed FNB that I lost my credit cards, and that the same had to be stopped. I received no feedback. Later when I queried it, they rep**** yes, they have sent an instruction. It is now several days later, and I have had NO confirmation that my cards was cancelled or not. Neither have they contacted me to arrange for new cards. This is pathetic service FNB. Make a plan.