Poor customer care

Been with this company for just under 3 years now and very disappointed in how their call center treats its clients. Moved to our new home a few months ago and for the first 3months the internet was okay until we noticed it suddenly became unstable and very slow compared to what we paying. After several calls to the call center i was told it was a FNO issue and they would open a ticket and was given a reference. Tried following up and no one could assist only saying they waiting for feedback from evotel. Every time I request to speak to a supervisor or manager am always given the runaround to why I can't speak to them, it's either they always in a meeting or promising to get back when available which hasn't happened and its been weeks now. We not getting our monies worth and it's very clear this company doesn't care for its customers. We would have easily canceled if it was not for us moving and will have to pay cancelation fees since we not a year yet in our new place. Just provide a proper service for which we are paying for than having to add unnecessary problems.