Bad service and terrible attitude

Been trying to purchase sms’ and voice minutes for the whole week but I keep getting an error that says”system temporarily unavailable, try again in 15 minutes” last night I called MTN to inquire about this but a call center agent by the name Mlungisi was very rude and gave me a number I’m supposed to call, apparently that number is for technical support the number is ***. When I called that number I was told that I’ll be charged R2,10 per minute of which I don’t have. I then decided to call again this afternoon my call was answered by Nthabiseng Ngwenya but it got cut don’t know how. I then called again I spoke to a lady by the name of Penelope Khumalo who was rude to the core. Penelope didn’t even wanna listen to my concerns she just rudely told me that her system is offline I must call again in 5 minutes. Didn’t call in five minutes but I called this afternoon I spoke to a lady who just dismissed and gave me the 135 number to call. When I called I spoke to Moagi who gave me a bad attitude from the moment he answered the call. After I explained to him my problem he just told me to take out my SIM card and wait for 5 minutes of which I did but still I’m getting the same error. I tried to call again the call was answered by Siqinesipho Mlomo( not sure of the surname) who didn’t even want to open her mouth. After explaining to her the reason I’m calling she just gave me this ussd #330*0000# I tried the ussd with no luck. Now I need to know from MTN if their agent cannot assist me where am I supposed to go to get help? I need this system sorted as soon as yesterday because honestly I don’t have money lying around to but airtime everyday