I closed my Verizon DSL internet service in February 2014 and paid all the balances in full. Around August 2014 I got a letter from a collections agency stating that I had an unpaid balance. I called and enquired about the reason for the unpaid balance and I was told it was because I had made some addtional phone calls! I contacted Verizon and was advised to dispute the validity of these charges. I did precisely that, informing the collections agency that there was no possibility of making any phone calls over a DSL internet line. I assumed the issue was resolved until I received yet another letter recently (February 2015) with the same unpaid amount, presumably for the same phone calls I never made. Is it possible for this issue to get effectively resolved?