Disgusting Company

I am truly upset with Teljoy, I made arrangements to have their items collected, they even sent me an email to confirm all this information when I initially asked for a payment arrangement they refused me and now they listed me with SAFPS really appalling, sent them countless emails, they just send me statements and threatening emails about being listed I called them they don’t answer, was on hold for an hour, I would like a manger or someone higher up to call me as this is really ridiculous now and I’m thinking of taking this further