4 months now! CANCEL MY LANDLINE and SORT OUT THE BILLING!!!!!

<p>I am still receiving accounts for my old landline ********** which was cwncelled on 1st May 2016 for the 31st May when I moved out. FIX MY BILL BY CREDITING ALL THE RENTAL AMOUNTS FOR 4 MONTHS!!!! No calls were made! What is wrong with you?????????????????? </p>