I feel your Talmadge pain. I live there and service has gone downhill over the last few months. This isn't a Sprint bash, just saying what I've experienced. The tower at Colwood and ECB was upgraded and is putting out LTE, but the site that serves much of Talmadge and Talmadge proper is at Monroe and Estrella (3G NV done). There are other cell sites in the area and Sprint has been having many problems with them, including Monroe/Estrella (I've spoken with Sprint multiple times about it, and not just the CS reps). For a while 3G speeds got considerably better but voice went South pretty quick - it got to the point where I couldn't use my phone inside my house (North of Adams) and even outside I had one bar, maybe two at best. I received many of the same responses you did from Sprint as well as "the problem has been fixed...wait, no, we are mistaken". Eventually things will be good, I'm certain of that, but I jumped over to Big Red for cell service. I rely on cell phones and things became not only unacceptable but unsusable to me in Talmadge and with too many dropped calls elsewhere.
Sprint did handle my complaints and credit requests very well and I might come back some day when NV is complete if unlimited data is still around.