Harassment calls and sms's

Very irritating and annoying with calls and sms's for an account that has been paid they are busy calling me and sending sms's for an account that i dont owe. I dont have a business with nimble, its a 3rd part which i never made any business deal with. I therefore dont owe them anything, but they make it a point of calling me and sending me massages to pay an account that i have prove has been paid, it is not my responsibility to update them whoever gave them my number must apdate them that they have received payment. My last payment for the account in question was a debit order on the 28th of July but to this day, they want to make arrangements for payment, even when i tell them am not interested in making arrangements with them, i dont know you, i dont want to know you, i dont want to recieve calls or massages from you, i am not intrested in what you have to say say. STOP CALLING ME, You wont get money me, i dont owe you.