No response from DELL STPL

I have placed 3 orders from DELL website directly.

Dell Monitor 

Dell Speaker

Dell Conf Speaker.

I liked the monitor but the performance of speakers is not good.

I have been reaching STPL email address and the contact number provided since a week.

Depsite multiple attempts, there is no response received from STPL.

I now regret placing these orders from DELL website directly.

I was under the impression that purchasing from DELL directly would be the best experience but this ended up being worst.

I would like to request DELL Customer support team to get this addressed if they can. Thank you.