Useless Support

Ive had an issue now for 3 months with these fools for a refund on a biz account, I need a refund for our complex and they cant do that. Everytime i call them i keep getting transfered to another department, from collections to pre-paid depart and who knows where else. These people are so thick they understand that the biz sim card is in an intercom system and cant receive calls or read messages but they constantly keep sending sms's and keep calling that number, despite me telling them constantly that they need to use another number. Everytime i call i have to try to explain the issue and no one understands, im sick and tired of these peoples stupidity, i just want the redund sorted!!