Delivery Waiting Period Wayyy Too Long

Takealot''s delivery period seems to be increasing exponentially. The one time I bought a head phone, I waited over a week only for Takealot to come back to me advising that the supplier does not have that product. Now I buy some vitamin powder and I'm going to have to wait almost 2 weeks before I receive my product. I hope they don't come back to me saying that they don't have the product. I have been an avid buyer but cannot see myself being that way for much longer. I can just easily walk into a store and buy the product immediately than having to wait weeks.