Harrasment

I've never ever in my life gymed there as I could recall not wanting to take up the contract any longer within the 14 days!!! They keep harrasing me over some fees I owe!!! I don't owe you nothing... Now that I do want to actually gym there as it's within my work destination and access easily I'm facing shame by saying I owe when I know I canceled... This is not fair I have never once had a debit order or gymed there and I was told it will be sorted by a consultant many years ago... Yet I'm being called daily for something I don't owe... I want this issue resolved as I am not at liberty to offer free money away for no services utilized ever...