Rain poor customer service

I recently downgraded from rain unlimited 4G plan worth R479 to a 4G plan for phones only worth R300 and on the 2nd of April i see a message pop-up saying i must still pay the original R479 when i have downgraded to a cheaper option because of financial constraints. Now I'm struggling with this ****py R300 4G plan because of poor network. I've been sending complaints so that the put me back to the original plan I've been using ever since. I've tried switching back via their website but to no luck. I'm honestly disappointed by the poor service the have given me.