Charged for International SMS

I am extremely unhappy and dissatisfied with the service from Vodacom. I have been charged for international sms's for the past year, none of which were sent by me. I queried this a year ago and was assured that the problem would be fixed. However, it's a year later and I have discovered that I am still being charged for international sms's. The sms's are being sent to my other contract number, which is impossible as I do not even sms to that number. According to Vodacom, this matter is still being investigated, during which time my account is still being debited every month which includes these high charges. I cannot afford such high cellphone bills and this leaves me in a negative financial position. <br> <br> I cannot wait for my contract to end, so that I can change my cell network immediately!!