OneDayOnly customer completely unsatisfied!

I am a frequent customer on the OneDayOnly site, until now i have yet to have an issue with their level of service. However a few weeks ago i ordered a product on their site, when delivered it was the wrong size compared to what I had ordered. The online company does not have a call center and thus i emailed the customer service portal, it has been over a week with multiple follow ups and I have yet to have a response, nor has the incorrect product been collected and the correct one delivered.

This level of service is just completely unacceptable, your customers have no direct way of contacting you to sort out issues, if i compare this experience to similar ones on Superbalist or Takealot I find OneDayOnly completely lacking. They are willing to take your orders and money but not in anyway willing to provide after sales care or support, and all i want is the item I have paid for and a response to a simple query email, surely this cannot be too much to ask?