Mweb terrible service

I app**** online with Mweb for a router and data package. I was a bit unsure of which package to choose but I thought I would speak to someone at Mweb when they call to confirm my order. Much to my surprise, a few days later it was delivered to my home. I didn't even know that the application was approved. There was no correspondence at all from Mweb. On the day that I received it, before opening the package, I phoned into Mweb asking if it was possible to cancel the order and I was told that I can't cancel the order even though I had not used it and the package was still sealed. I thought consumers had a 7 day period in which to return the goods or cancel the order? My next attempt was to try and then change the data package to a cheaper one. I tried calling in but was put on hold for so long, my airtime got finished. I went online and logged a query to change it but up to now, I have had no feedback, email or call from Mweb. I tried calling again, again I was put on hold for nearly 10 minutes and my airtime got finished. There's no email address in which to contact Mweb either. In this time, they have debited my account with over R3000 and I can't get into contact with anyone from Mweb to sort this out. I tried calling on 6 May, 08 May, 13 May, 28 May and again today. I just don't get through. Please help, not sure what to do next.