Unsatisfactory response from cell c

Renewed my contract not even a month ago. I can't get into my contacts and if I phone or someone phones me it crackles so badly that you can't hear a thing. Phoned cell c and I was told I must bring it in so they can send it away for repairs(phone not even a month old) but they won't replace it or give me a tempore phone coz they lent the last one out today. So I must go with out a phone, which I use for business, for plus minus three weeks. Oh and if I take it into Samsung i might have to pay for the repairs. (CAN U BELIEVE IT) Didn't expect this service from them. Have had three contracts with them for years so would have thought i would get better service specially seeing the phone IS NOT EVEN A MONTH OLD