suspended line

payment was made as always on time via the bank of R420 , I went back to the store and requested they fax my proof of payment this after making payment at nedbank..today is the 10.12.2015 and cell c has suspended my line requesting proof of payment . this is the third time I am struggling with cell c , i feel it very unnecessary and very very frustrating , the call centre is no help what so ever and clearly the store is no better .every time I log a complaint cell c gets back to me and apologises however they still request R70 for reactivation and STILL request proof of payment , you ask questions and if they don't know the answer they go silent. I feel I shouldn't have to go through this every month. I make payments on time without fail every month , I don't even short pay but because of cell c incompetence my name is probably listed as a bad payer .im really frustrated and disgusted with the service and feel I need to be compensated somehow .I would like my line to be reactivated and this without an extra fee of R70 as I did my part to make payment on time CELL C HAS FAILED yet AGAIN to play there part