MTN - QUICK TO TAKE NOT GIVE

I have been dealing with MTN for the past 3 years and I cannot think of anything good to say, sad but true. Despite numerous requests and promises MTN has failed yet again. I requested in May for 2 migrations to be done because of high usage, not to mention all the other requests that was done incorrectly, to this day it has not been sorted, The excuse, MTN was on strike (not my problem), I requested for credit notes TO NO AVAIL. The company spends an average of between R30k and R35k per month with said SP. I went as far as to cancel the debit order for last month, deducted the difference of the 6 invoices and paid the balance. An sms was received that we must pay or the lines will be disconnected. The consumer has to suffer because of incompetence. I am probably wasting my time writing this complaint, maybe just maybe, somebody would actually take the time to sort this out. MTN Customer Care/Service is non-existent, because they cant keep up with the demand of customer complaints, so why have it?