I was told that the mortgage was paid in full and Green Tree Servicing cancelled my homeowner 's policy and sent me a letter indicating that the insurance was cancelled because the loan was paid in full. Subsequently, they have called me constantly, from morning until night demanding more money. I sent them an additional XXXX last month and I am still receiving threatening letters insisting that I still owe more money. I requested a payoff and the payoff says that I owe XXXX even though the statements I have received say that I owe XXXX in principal and XXXX in escrow. Every time they call here, I have requested an explanation for this discrepancy and in addition I have called countless times to try to get a straight answer but they never provide XXXX. " Someone will research it and get back to me, '' or " they 're looking into it and will call me back, '' but they never do. Still, the collection calls and letters keep coming. This is so stressful that I feel sick.