Pathetic service from RCS

I opened an account last December with Queenspark and did not receive any statement with my balance so how do they expect you to pay but RCS who handles their finances and who should be sending out the statements, don't, but they very quick to send you a SMS threatening to hand you over. Trying to contact RCS telephonically is a nightmare because you wait without your call getting answered however why must I phone them to get my balance or statement as they should automatically send it as they do have my mail on record .Furthermore in May 2023 I requested this account to be closed when I settled the outstanding balance which wasn't done because I received a call today 14th July saying that I owe R120 and when I asked for an explanation as i didn't purchase anything so how can I owe them, I was then told that is charges for admin costs, easy money making for an account that had a nil balance, the first I heard of this as I have a Woolworth account with nil balance and they don't charge me a monthly admin fee Ridiculous RCS.