*********** customer service representatives

Okay my journey started on the chat. I simply reached out to FNB to enquire about two things. Why wasn't I getting a debit mandate pop up like I usually do when I increase my limit, I've been trying to increase my limit for 3 days and the increase is successful but no mandate popping up. The lady I spoke to says it's because I didn't make any payment which is not true because I made two payments on the 8th and did the request on the 9th. Now if it was the weekend and it didn't go through, I understand that but her explanation doesn't make sense. Second thing was the high interest, my interest was 3 times higher than it usually is. The other lady explained because I've been transferring and buying electricity and airtime but now, the bank already deducts transfer fees and airtime fees. Why am I paying twice, does that make sense? That would be exploitation . Can someone call me or email me and give me concrete answers because I've spent the last hour being transferred from department to department being given nonsensical answers