Bad customer service but what's new

I tried to call the MTN call centre today to query an amount deducted from my account by MTN and after holding for 30 minutes my call was answered but then cut off. MTN, not only is it unacceptable for me to have to hold for 30 minutes but being cut off after holding for an extended period is frustrating. I have now had to phone back and have been on hold now for 15 minutes. How much longer will I have to hold? God knows. MTN is a massive corporate and therefore has the means to ensure better call centre service than is currently being offered to paying customers! Get it right MTN!