Pathetic service from MTN, CellC and Vodacom

To all the Mobile ISP's, your service is beyond pathetic. I'm trying to get a quote for 500 000 SIM for one of my clients to use at they LTE routers but no one is coming back to me. CellC phone me 7 times from different departments and management levels but still no pricing/quote. MTN you guys are the joke, no one is even coming back to me. Vodacom just sends me an email that someone will get back to me but still nothing.

Can any of the ISP's get hold of me, please? **********