Sales Team are shockingly poor

I was initially assisted by Geoff, we had app**** for a fibre line and were awaiting an install. Geoff called and suggested we take a VOIP phone for use with the fibre line. I agreed and the phone was delivered at quite an expense to us. Then, when it came time for the fibre line to be installed, between Vox and Vumatel it took well over 3 months to get this right. Since the line and phone would be used for business operations we could not wait for the fibre line to have a phone, so we had to make a decision and went with another phone supplier. I contacted Geoff and requested the VOIP phone be returned (it was still sealed in the original packaging). At this point Johan, Geoff's supervisor got involved. This was all happening around the 7th of December 2017. Johan said they would collect the phone and credit the account. I have been waiting nearly two months for them to arrange this. I have contacted Johan several times and he keeps saying the same thing, that he will get this sorted but never does, I have even escalated this to their customer care/complaints and they dont seem to be bothered.