WIFI Pods

I want a WiFi evaluation to determine eligibility for a complimentary WiFi Boost Pod. I currently have 1 boost pod, but I still receive poor signals throughout our home. Our home had the old Adelphia system installed. They were able to replace some old cables, but our system must have a booster to the main cable box to get enough signal. Other rooms have splitters to receive signals on the top floor of our home. (3 stories) Our 1 pod is doing an ok job on the 2nd floor. The third floor, where my office is located, is still slow and unpredictable. Paying $119 for additional WiFi booster pods is another expense on an already expensive Xfinity monthly payment. Any help would be greatly appreciated.