Account paid in March still waiting paid up letter

In march 05.2015 i settled my account i had also sent the proof of payment that same day to [Email Removed] to date i have not received a paid up letter. rather both my contract numbers was changed to pay as you go, but Mtn still debits 5401.00 from my account i went to the southgate mtn store they sent an email on the 01.05.2015 and nothing happened the end of may they debited again the same amount from my account when i go to the store they are closed. BECAUSE THEY ARE ON STRIKE. since the 04.06.2015 i have been trying to get a paid up letter and did not receive any. on the 08.06.2015 when i finally got through to the call centre i spoke to lusciano and he confirmed i will receive the letter within 24 to 48 hours on Tuesday i called again and spoke to Mogamit and he confirmed the same thing today the 11.06.2015 i spoke to lesego and still nothing, i asked her to speak to a manager or supervisor and she gave me a long story of they are on strike and i told her there is a manager there. and she goes and drop the phone while i am waiting for her to put me through to a manager . <br> <br> I AM SO ****ED WITH THIS **** OF MTN, TODAY THE BANK CAN NOT ASSIST ME WITH A LOAN BECOZ OF MTN