2 year contract

I have been a Comcast costumer for 30 years, and I am retired on a fixed income,I need to know when is my 2 year contract ending, I am paying $210.00, and I need to know when to cancel, before the bill goes even higher at the end of the 2 year period, I started at $160. and it has been going up in spite of the 2 year agreement, used to get HBO included, and then it went to $15.00 plus, fees, taxes, etc,etc. I have been trying to find the exact ending date of the contract,but so far no responses.