Pathetic service

DSTV phoned and offered me a new package deal. This I agreed to 7 weeks ago. The courier service allege for 7 days they could not get hold of me to deliver the new decoder. On 16 August they allegedly delivered it to me whereupon Multi choice notified me by SMS that my account has been activated. At this stage I contacted the helpline to ask what they activated as there was no serial number. I was given good reasons, but none that said it had been delivered to me. This I found out later. I contacted the help desk every 48 hours, to no avail. On 1 September, a decoder was dispatched and I received it on Friday the 3rd. When the contractor arrived to install this decoder, they were advised that the serial number on this decoder did not respond to the serial number linked to my name on the system. I made contact with the help desk (Manager) who promised that she will sort out this issue, over a week ago. Apparently this decoder must be returned to their warehouse and only then will the correct decoder be delivered to me. This is one week later and nobody has collected this incorrectly delivered decoder. Now we get absolutely no response from the help desk and Manager at all!