Accounts Service is useless

Have not had a phone bill for months, I have asked to please have it emailed but that fell on deaf ears, to date nothing, they don't post any more, so as a result I pay a thumb suck figure as I haven't got a clue what to pay. I have registered for on line billing and that was a disaster as according to telkom my account no and phone number DOES NOT EXIST!!!! Had the number for at least 25 years AND IT STILL WORKS AND THEY STILL ACCEPT MY MONEY!!! I login in and it tells me there is no account listed..... why did I bother to register for on line billing when they can't even get that right. Complained on FB and got a message and promised to fix the problem that was three weeks ago and still NOTHING. Can only be the most useless crowd going........