Suspended Service Incorrect Billing

I sent an email requesting that I move from a 55gig LTE package to a 60gig day and 60gig night package.

I received the sim with no communication advising that I was receiving the sim.

I accepted it since I did want the new package, however my entire service is suspended as I'm supposed to pay for the 55gig sim plus the new sim when I clearly requested to be moved across. How do I use 2 sims on 1 device and why does my entire service need to be suspended.

I have been on the phone to webafrica from 3,30 yesterday till after 6 last night no assistance provided, neither any response to my emails.

When I queried why did I get the sim when I enquired on my email I was advised it didn't look like an enquiry, let's get technical, I also stated I want to move across so why am I being charged for 2 sims when the 55gig is only being canceled end of November as per webafrica. Why am I on the losing end of this.