Useless Supersonic

I app**** for a device and internet in the beginning of March 2020 and struggled with delivery, started communicating with them since 26 March 2020 trying to find out when delivery will be, yes lockdown happened and they assured delivery will still happen on 8 May 2020 still no device as the courier kept on going to the wrong address and the correct address was given multiple times. so cancelled the delivery on 8 May 2020, first cancellation request was sent on 09 May 2020, then many times after that too (can supply all the dates) On 15 May 2020 got word that it has been cancelled successfully, now the fun starts, from 30 Aug 2020 I start getting messages every month that I have reached 100% of my anytime cap. Now I have not received that device and cancellation was basically confirmed. Now today I receive a sms that my account is in arrears and must make payment. Now how the freaken hell must I pay for something I did not receive and sure enough have not signed for. Never ever make use of their services!!!!!!!!!!!!!!!!