Misleading and unprofessional services

I would like to write a review about Rain, I have never been mislead and under valued as a customer like I have been by this company I took out a LTE package with them in which I was promised 20mbps line at a certain price in which when the services finally commenced 90% of the the speed was 0mbps called in several times to try and resolved the but the company and it’s always had an excuse to why this was happening finally spoke to someone who was truthful and admitted that there was no coverage where I stayed meaning I was mislead to think I will get the desired internet speed by whom ever I spoke to for them to get me to sign up, ended up deciding that I should cancel the services at the end of August but I was still debited for the following month in which I still called in to have this resolved and the agent I spoke to promised that the company will collect the device and refund my money back into my acc. I was asked to send an email with my acc details on the 2 of Sept in which I did and I still have reference no. Weeks went by constantly getting phone calls from a courier company that works along side with rain to come collect and I made it very clear that I will not give out the device until someone from rain called me and my refund was processed weeks went by and finally someone called did follow up on the previous discussions and assured me that my refund will be processed instantly after the device was pick up, finally last week CCD the courier company collected the device but no refund has been made to me and when I call in today at rain the agent I spoke to me says there is no refund that’s bieng processed in this regard and I just received an email saying I paid in advance for September service which contradicts the discussion we have been having with the rain representatives i ring this very frustrating and un professional please assist with a way forward