Inconsistent communication

They have been sending me SMS regarding the arrears and that the house will be sold on auction . Regardless of the fact that I did send an email requesting a payment arrangement . The last email they just read and never responded . Is their intention to sell my house? The total number of these SMS is 13 FNB Due to arrears & legal fees on your Home Loan, your property may be sold at auction. Call *** or email ***. FNB-An Authorised FSP+Credit Provider(NCRCP20)