BEING DISPATCHED NOW FOR A WEEK LONG

So I have ordered a dstv explora from dstv on the 5th of November on the 8th of November I call them to find out when the parcel will be arriving. After finding out they tried to deliver at a address which they could not found. So the parcel was send back which I then understood but also no call was made or tracking number was given to find out which address was the correct one. I then decided to change delivery address which was Monday the 8th of November. As they have promised that the parcel will be delivered latest Thursday or Friday. Called again this morning just to have found out that the parcel is not yet dispatched. What pathetic service is that as I also worked at a courier company which always strive with success with their clients. If you guys can just please tell me the way forward because dstv will loose a lot of clients if this persists. I am so disappointed in this company and will not recommend any one to this company. I will expect to have my parcel and a respond asap.