TELKOM BILLING IS PATHETIC!

I have a small business from home package (landline) for a fixed amount which includes "free calls" to any mobile phone (does not matter which service provider) and landlines (exept if a company has ported their number). Towards the end of 2019 I had to "upgrade" my landline to the wireless phones. Because I have the small business from home package I had the option of the smart phone which includes 20 G data apart from the calls I am enititeld to. Since Dec 2019 I get each month billed for approximately R300 for sms's that is supposedly send from my phone. All to the same number!! No one else have access to my landline as I carry it in my hand bag together with my cellphone. Who in this day and age is still sending sms and then from your landline!! I have put in a complaint with Telkom ref nr ***6 and was told that I will get feedback within 7 - 10 working days. Needless to say, I had no feedback and I called them again today to find out that the case was closed as the sms' has been send!! No notifying for me that case was closed! I just went to see if there is any sms on my call registry - only sms from Telkom to say hom many gigs remains. Only option is to cancel all our Telkom contracts