TIRED AND FED UP!!!

I have been struggling to get these people off my back since January 2019, they said i was handed over by planet fitness, but i have emailed all correspondence between me and Planet Fitness to them as the account was settled and i was wrongfully handed over. They say i owe them admin fees, i have been trying a million times to tell them that its an error they need to contact planet fitness but they just send me an sms every few months saying i owe them money. I told the guy look on his system, everything is there and he said he cant see anything and will refer to management. Their incompetence surprises me. i wish they would just go away.