Appalling service from Rain

I'm disgusted and disappointed with the level of service provided by rain. I have been on their 5g package for a few months and I had been getting really poor and inconsistent speeds, at times the internet just used to drop and I had to keep restarting my device, I was told to move the device to different parts of the home which I had done and even in the best possible space I used to get speeds as low a 1-3mbps. At this stage I decided to cancel my contract, I went online and clicked on the cancel button but nothing had happened, I tried multiple times with no success at which point I tried using the service message option. I had not received any feedback from rain, eventually I managed to cancel my contract online on the 2nd of February at which point I received an email notifying me that someone would be in contact with me within 24 hours, I had not received any word back within 24 hours and sent a support message asking them to confirm my contract has been cancelled with immediate effect, still no response, eventually someone contacted me from rain on the 10th of February at which point the consultant told me they are only able to cancel my contract from the 11th of February, this annoyed me as I put through my cancellation already on the 2nd, the lady was also very rude to me when I'd asked her why they couldn't cancel the contract back from the 3rd when they were meant to contact me. She told me that someone would be in touch with me to come and collect the modem and still by the 21st of February have I not been contacted for someone to fetch the router nor have I been refunded what's due to me. I'm appalled by the level of service I've received and would not recommend or refer anyone to rain ever again!