Rcs are committing ***** on customers account s

Ive got a game card,and every time u buy on the card im harrased by their staff,to pay my account ,each week,im not behind on my payments,but they are a nuisance,i complain about the harrasing calls and sms,then they stop notifying me what my payment are,and after i paid they send me threats,their system does not puck up- payments,its asif they have people that check if payments are done but only start with the letter a then they give up,im so tired of complaining each month about the same *****nce ,they are such a nuisance for garrasi g me and im not behind on my payments,exept for that thet commit account ***** with the account ,the more you buy the more you owe,im not allowed ever to increase my credit if R1500 ever,byt when i buy,and i only buy fir that amount,i took monthly instalments,they add R100 minimum extra each month to my credit,they are a bunch of *******