BAD INTERNET SERVICE

I ordered my rain sim *** from rain itself paid the money 20/06/2020 and received my order if remember correctly 24/06/2020. We only started using the sim 30/06/2020. When i inserted the sim into my router i did not get an sms or anything saying that my sim is now active i changed the APN on the router to rain but to be honest for LTE 4G the speed sucks i struggle to download for one episode it takes about 2 hours to download then it is 360MB. When we are streaming on netflix every now and then it starts to buffer. i thought i would be happy with the data but honestly i am really disappointed in the service. when i log into my rain profile my device details do not even show. If the internet service do not improve in the next day or two my cancelling and going back to my old ISP. i loaded 3 support tickets and still haven't heard anything back or got any improvement whatsoever support ticket 1 on the 30th of June ***, support ticket 2 the 5th of July ***, ticket 3 the 6th of July ***. Can you please assist