Harassment from Nimble Group

Due to a lack of communication from ADT Security my account was handed over to Nimble Group. I came to hear about this when I was on holiday in SA in March 2025. I settled the account with ADT yet Nimble Group continues to harass me. I have forwarded POP and the paid up letter to Nimble Group but my communications fall on deaf ears. I've been living abroad since 2021, as such am unable to go to Nimble Group offices to clear up this matter. Nimble Group instead of using a Bot, Ntombi, engage real people to deal with issues. Your continued harassment is extremely frustrating.