vodacom once again show true colours

So once again vodacom proves that they do not care for their customers! They have not read my complaints properly at all. I notified them that number 1 I am in Thailand, number 2 I am not using my SIM card here as I have a Thai Sim and they keep adding stuff to my vodacom bill while I’m not using it. no attempt at all has been made by vodacom to help me with my first complaint and the second complaint they use a useless “we could not get hold of you after numerous attempts” but I have already told you that you must contact me via email as I will not use your shoddy service again. I’m not paying you for things that I am not using. vodacom is always the quickest to debit my account but their after sale service is negative 5 stars! I want my money back for the service I did not use here in Thailand. My bill was supposed to be R779 and I was billed R1229. Where is my refund? Let me guess what your next response will be “unfortunately we are unable to get hold of you after numerous attempts.” Sick of this thieving company!