repeatedly poor Customer service

Good day

I had taken a contract out at a certain monthly fee, i have full email proof from club manger and sales rep , over the past few months i have been getting over charged , i had contacted the new sales manager and club manger , the have assured me and we had solved the problem , with email proof , of 2 free months to compensate for the over charge and their '' price lock'policy , but to no success i have not been given my 2 free months nor has my monthly fee been dropped to my correct stipulated amounts .

This has been going on for 5 months !!!!!!!! i have complete email trail of both parties

i wish i could just cancel my contract and had never joined in the first place