Sumsung Galaxy S20 FE network Coverage issue

I recently bought a sumsung Galaxy S 20 Fe cellphone from Telkom George, two days after I started experience network coverage issues, I then returned to the shop and explain to the consultant about the issue. The consultant by the name of Pritty suspected could be phone settings, she tried sort out the phone settings and told me go back to my place to try it again and in the mean time she will contact Sumsung technician who was in the mall.

I went back home try it, still it did not work. She called the consultant to the shop to look at it, but the signal strenth on the phone was weak. I request the Consultant to replace the phone or cancel the contract because I already lost hope and faith on the device. The manager by the name of Shaheen Hendricks refused to replaced the device, insisting that I should home with him so that he can check it and then told him i tired of going back and forth, we should replace the device or cancell the contract.

Telkom wants to charge me over R10 000 for termination of contract which I strong believe as its not stipulated in their 7 days policy. Please assist I can't affort to pay this amount and I feel like my consumer right are violated.

Regards, Floyd ***