Rain has the worst support ever!

Worst customer service ever. Since signing on with Rain have experienced problems with both internet speeds and with calls. I am from Sharon Park, Nigel, Gauteng. However the last couple of days my internet speeds have averaged at 0.3mbps instead of the +20mbps that are promised. In the many calls to support I have unplugged my router, reset my router, etc countless times and obviously all with zero success. Eventually our of desperation I plugged my router into a ups and took it on a tour of neighbouring areas. Dunnottar had fair speeds and showed 4g. Selcourt had excellent speeds and showed 5G. Kwa Thema showed excellent speeds on 5G. I once again called Rain and gave them the details but without much luck from the support lady. I eventually spoke to the floor manager who also was not much help. I have asked that Rain cancel my subscription but it seems that they want me to pay for another month even though they do not supply the goods for which I am paying. I am sorry but I have cancelled my payment.