Unhappy with service

They presurize you to take up a agreement with them and when you want to cancel, no-one comes back to you or get in touch with you and the excuse is there is problems with the internet. Even though I even asked one of the employees to come back to me on cancelling my policy ,because I can't afford it. Still did not hear back from them, until yesterday , now they say I can't cancel due to not being in the cooling off period anymore. I did pay a deposit ,but didnt pay any installments yet . I would not refer them to anyone