Network Coverage

I bought a wifi devise from Telkom store. Before I moved to my new place I went to the store to check if there is coverage and I was advised that there is coverage. Upon my arrival in the new address I realized that there is no network coverage for both wifi and mobile phone. On 24th May I went to store to report this and was given case number ***3. When doing follow up through call centre I was advised that there is coverage in my area. I then requested Telkom to send technician for testing. Technician confirmed that there is no coverage in the area. I've being sending numerous follow up emails and phone calls and I'm told that my case is in the wrong que. even yesterday 27th August I was advised that my case is still in the que to be attended to. call centre agents told me that the turnaround time is 72 hour, but on my case is more than 3month. TELKOM DOESN'T TAKE CUSTOMER COMPLAINS SERIUS.