I've signed 2 years contruct that I was introduced...

I've signed 2 years contruct that I was introduced the App I can earn Murcury dollars to help pay the bill myself also, motivates me to exercise.
Very disappointing that only worked a few weeks. Delete/re-download many times, took phone to the shop to check.
I rang customer service but they say nobody else has the probs.
Looking at the review, there are a few comments same as me but customer service doesn't seem to be care about it.
I will change to cheaper company when contruct expires.