Making sure you can view your call log from July of 2018 is a must, Ropruup. I know that I have needed to view my historical call logs in the past. I apologize that you have been having trouble in accomplishing this task, and I am happy to help. This is something that would be included with the PDF copy of your billing statement, which can be retrieved online. You have access to the last 18-months of billing statements, and here’s how to access them (Follow the steps listed under Download PDF and print – My Verizon Online): https://www.verizonwireless.com/support/download-billing-statement/
Let me know if this helps.