unpleasing service

good day i had app**** for a internet fibre from MTN, and I was told my service provider will be Supersonic, they first came to install the fibre on the 18 of July 2025, and some box was missing and they came the following day to complete the installation with no success, and the were back again on Monday 21/07/2025, that when the installation was complete, But the fibre was not working on my side, I called them on 28/07/25 a Lady assisted me by resetting but it was still not working, She had said She logged a ticket to technical department which were supposed to contact me within 48 hours, I called again on Friday 25/07/25, I spoke to the same Lady and She assisted me the same way of trying to reset the fibre with no luck She again advised about the Technical support to contact me, and I was not contacted, then on Sunday 27/07/2025, I called to cancel the whole fibre service as I had had enough of them giving me the run arounds, I spoke to the Lady by the name Noluthando Zwane, about the cancellation and She advised me to log on the portal and She guided me on how to cancel, We did that with Her on the phone and She advised She can see it from Her side too that the cancellation was visible, and we spoke about the 7 days cooling off period we were both not sure when the 7 days was gonna be calculated from as my fibre hasn't worked from their completion of installation which was the 21/07/25 But either way I had called on the 27/07/2025 which it was the 7th day, Noluthando advised me that I was to get a call from the cancellation department within 24 to 48 hours, till today I haven't received a call but have been getting unclear emails which I have responded that the emails are not clear and I requested a call back still no one called me, today I received a debit order from them, and I called this morning and I spoke to Bonginkosi Mbethe, only to be told that my cancellation shows that I called on the 28th and cancelled so the cooling off period was not valid, I gave Him the reference number #SST 533 31, He said He does not pick up my call for the cancellation that I did on the 27/07/2025, when I insisted about the full information He advised His supervisor will contact me. I am still waiting for the call.