SLOWEST internet speeds

A few years ago I cancelled my MTN contract prematurely because your reception in the area where I stay was, well pathetic. I moved to Vodacom.

I moved back to MTN because of your Black Friday specials, but your service is again deteriorating in the area where I stay.

I INSIST that you send a technician to come and test the signal, which OFTEN reverts back to 3G. I cannot even use the internet properly anymore!!!