Appauling/Shocking customer service

I am utterly appalled by the service I am receiving from MWEB. I recently got the LTE internet product. It worked fine for a month and then stopped. I don't have a problem with a product being faulty its the after service that I am receiving that have a problem with. I called the MWEB technical call centre on the 26/10/2017 to report my fault. The advisor Nuran advised that all seems fine on there side so she will have to report the fault to RAIN which is there service provider/ 3rd party provider and she will get back to me by 14.30 the same day. Later that afternoon my call was not returned so I called MWEB again. This time I spoke to a different advisor who advised that they are still awaiting feedback from RAIN. Over the next 5 days I still didn't have internet and every time I called the call centre I was given the same excuse that MWEB is still awaiting feedback from RAIN. I could not handle this excuse anymore so I decided to find out what the problem is. I replaced the RAIN sim card with another sim card and it worked fine, so clearly the problem was would the RAIN sim card. I called MWEB again on the 30/10/2017 and spoke to a manger Brent Best. He advised that it was unacceptable that I was always given the excuse that MWEB is awaiting feedback from RAIN. I advised Brent that the problem was with the sim card and please arrange for a new sim card as it has now been 6 days without internet. Brent assured me he will contact me on the 30/10/2017. At 16.00 on the 30/10/2017 I didn't receive a call from Brent. I called MWEB and spoke to Andre, he advised that Brent was unavailable and he is sending him an email to contact me urgently. On the 31/10/2017 I called MWEB and now spoke to Shayna she advised that they are arranging a new sim card for me and I will receive a call in 10 minutes from the hardware department, that was 1 hour ago. I have been with MWEB for many years utilising them for all my personal and business internet needs. I have never before received such appalling service. Firstly RAIN who is there service provider/3rd party provider doesn't have a contact number and its been 7 days and MWEB are still awaiting feedback from RAIN. Guys maybe you should consider changing your provider. And if I was promised from a manager at MWEB that my call will be returned and it was not I cant expect anymore from the advisors .