Selling a Service they can not deliver

I purchased a DSTV Decoder that was supposed to come with the dish & installation on the 24th of March 2016. SI Gumede who was making the sale, broke the seal & contacted aerial king on the numbers on the voucher to come & install. I was Informed that this would take place in 2 - 3 working days.<br> <br> The 25th of March was Good Friday and the 28th Easter Monday (4 days). On the 30th I phoned aerial king & was made to hold for a very lengthy period of time on my cell phone to find out why a technician had not come out to install. They told me the first working day was on the 29 and that they have until tomorrow still to contact me to make arrangements to install, which would be the 31st.<br> <br> At 15:30 on the 31st I called aerial king on the landline at work andwas placed on hold for a very long period of time again. I was told this time that they have a lot of calls and that my area is an outlying one. They will get to mine, this time the consultant would not give me an ETA. On the 2nd of April I went back to House and Home and they told me they cannot take it back it is after 7 days & that the seal is broken when they are the ones that broke it.