Sick of Cell C

I have been with Cell C since 2018. For a while I would receive my statements by e-mail. Sometime in 2020 ( I think) Cell C stopped sending me statements, but because I paid an almost fixed amount monthly I did not make much of it. The problem comes whenever I actually need the statements. I once called Cell C and asked for my statements, and also asked that they keep e-mailing monthly statements as before. All I received were statements for the month in question but going forward Cell C did not send further statements. Now, I call Cell C to ask for my statements; they ask me some security questions; I tell the lady that I have since moved and I am not sure if I had my home address updated on the system and so I give her my old and new addresses. She objects and tells me that I have to give her one address. So I give her the old address. She then comes back and says that I have failed the security questions. I ask her which one and she says she cannot tell. I tell her to in any case send the statement to the e-mail address she has one the system; as it made no difference whether or not I got the security question wrong she will be sending to the e-mail address she has on the system. She would not budge but was adamant that she could not help me. This irritated me so badly that I think I am going to leave Cell C. First I did not ask them to stop e-mailing me my statements and now I cannot get my statement because I have had my address change. It makes no sense at all why the lady couldn't just send the statements to the e-mail on the system.