Pathetic service

As a corporate account holder I booked 2 different calls (2 different locations) for poor signal on 3 August and 21 September. I received no feedback and when I followed it up today, 21/10/2015 I was informed that the 1st query was logged as completed(without anybody visiting the site) and the 2nd one could not even be found on the system. <br> <br> This is unacceptable service for a big account and I want to know how this happened and what is done to prevent this from happening in future. This level of service cannot be tolerated.