Harassment is against the rules, especially from a "collection agency" that doesn't appear to be a registered debt collector. If you have those telephone messages stored then keep them as they'll be useful as evidence in your favor.I rang QC yesterday to question letters and inform them I owed nothing, guy got rather threatening saying Id lose my credit rating and so forth, I didnt pay a thing to him said I needed to contact citizens advice but would ring back today (I never rang CA but spoke to a police friend). Today I rang Supanet and questioned the demands. They confirmed that I owed £272, so I requested from them a detailed summary that fully explained the charge and a copy of the original agreement. They apparently are sending one through within 30 days.
In the meantime I received an ansa-phone message from QC with a tirade of threatening abuse saying that the issue had now been escalated, it would be going to the legal department and Id lose any credit score I had and would be black listed for 6 years! Very worried and feeling threatened. If I owed the money I would of course pay but I know I dont and really hacked off that they can make me feel like this.
I highly doubt they'd actually take you to court as a judge seems likely to rule against them. Trading Standards may need to get involved.