Telkom - The company where you have to repair their devices

We took out a contract for a Samsung S7 end of March 2017 - the battery drains to 34% in 1 hour, the apps freeze or don't open, the phone overheats and some functions do not work. I am told that I, the customer, have to take the phone to Samsung where it will be in for 21 working days. This is my work phone, how will I contact my clients? Secondly at the same time we took a Lenovo laptop and mifi device and today just as I was submitting VAT, the screen died....no warning, no previous issues and in the middle of financial year end. I am also told to go to Sandton and hand it in to have it fixed. ALL my work info is loaded on there so how will I work for 3 weeks and why must I , the client drive over 100km for Telkom? This is absolutely ridiculous.