Lack of customer service

Good day,<br> <br> I recently bought a voucher from the Groupon website. I was not able to utilise the voucher because the service provider was constantly unavailable.<br> <br> I then sent an email to Groupon on the 12th of September, I did not get a response so I called in on the 16th when I was promised a response by the 18th. That did not come so I called in again around 3pm and they have promised to get back to me by 5pm. <br> <br> Today is the 21st and still no response from them.<br> <br> I'm so tired of having to follow up on them. Have they no regard for customer service. <br> <br> Never using their services again as this is not the first time I have issues with their customer support. It's shockingly non-existant actually.<br> <br> Regards,<br> Thembisa